Showing posts with label caves. Show all posts
Showing posts with label caves. Show all posts

Monday, July 29, 2013

Exploring Hot Springs, South Dakota

We had a really busy day on Saturday, with three stops on our agenda.  First up was the Black Hills Wild Horse Sanctuary.

Wild Horse Sanctuary

We had seen it on the map, and on several billboards along the road, so we drove a few miles south of Hot Springs to check it out.

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The Wild Horse Sanctuary provides a safe place for wild and rescued mustangs to roam free and thrive. 

We had hoped we’d be able to drive through the sanctuary and see some of the horses, but it turned out that you had to take one of their guided tours to see the horses.

Tour Busses

At $50/person, and 2 hours, we decided to skip the tour.  They did have a few Choctaw Ponies that had recently had babies, up near the Visitor Center, so we stopped to see them before we left.

Mom & Baby

Choctaw Ponies

 

The babies were really cute!

Baby

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Bryce’s favorites were the chickens with the furry feet that look like slippers!  Bryce liked the little chickens wearing slippers

 

 

 

 

 

 

 

 

From the sanctuary, we drove back to the Mammoth Site in Hot Springs.

Mammoth Site

In 1974, while excavating for a housing development, the contractor discovered a bone that turned out to be from a mammoth.  26,000 years ago, this site was a water-filled sinkhole which numerous columbian and wooly mammoths had fallen into and died, eventually covered by a mound of sedimentary rock. 

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Wooly Mammoth – actual size

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Columbian Mammoth – the largest of all

The site was eventually secured by a non-profit group, and a climate-controlled building was constructed over the site to contain and preserve the prehistoric remains.

Multiple mammoths in this area

97% of the sinkhole is contained within this large open room.  They have dug down about 20 feet so far, and have discovered 121 tusks, so at least 61 mammoths – 58 of them have been identified as columbian, and 3 as wooly.

Tools of the Trade

These are the tools used by the scientists to dig, and beside them is a tusk.  July is the only month when digging is done, and the other 11 months of the year are spent testing and analyzing what has been uncovered.

Complete skeleton, except for the head

 

This skeleton is nearly complete, missing only the head, and was found near the edge of the sinkhole.  The scientists believe that he was trying to climb out of the sinkhole, and died there, although they don’t know what happened to his head.

 

 

 

Below is the head and tusks of another mammoth.

 

Mammoth head & tusks

Even after the sinkhole dried up, as it continued to fill with sediment, mammoths travelled through the area.

The scientists have found evidence of their footprints, both in the cross-section of the rock (indicated by the green arrows in the photo below),

Teeth & Footprints

and on the surface of the layers of rock as they are removed.  (In the foreground of the picture above are teeth.)

Footprints

While we were on our tour, we saw scientists at work in the dig site,

Scientists at work

as well as down in the lab, analyzing and cleaning.

Mammoths aren’t the only animal remains that have been found in the sinkhole.  There have been 58 other species of mammal discovered – including rabbits, wolves, prairie dogs, and even a prehistoric short-faced bear,  Prehistoric Short-faced Bear

 

 

 

 

 

 

 

 

one of only 15 found in the entire world!

It was a very interesting tour, and in addition to the dig site, they also have an exhibit hall with displays of replicas of the mammoths.

Columbian Mammoth

Mammoths, especially wooly mammoths, were hunted by Indian tribes and their hide was used for clothing and building shelters.

Mammoth kill

Indian Hut

The Mammoth Site was a really interesting and educational stop, and we’re glad we visited!

 

 

 

 

 

From there we drove north a few miles to Wind Cave National Park.

Wind Cave

On the surface, it looks like most of the surrounding area, but lurking below the surface is 140 miles of narrow, complex passageways.

After arriving at the Visitor Center, we purchased tickets to the next available Natural Entrance tour.  Before our tour, we had just enough time to watch the orientation video where we learned about the discovery of the cave, the exploration that took place before it became the 6th national park, and the preservation efforts that have taken place since then.

After the video, we met up with our guide and walked the short distance to the natural entrance.  Natural Entrance

This small opening in the rock is where those first explorers discovered wind coming from the cave, and its where they entered the cave to continue exploration.

Wind blowing out of the cave

Depending on the barometric pressure, the wind can be coming out of the cave, or being pulled into the cave.  On the day we were there, the wind was blowing out of the cave.

The entrance we used

 

That small opening may have looked inviting to those early explorers, but we were glad we had a more “normal” entrance to go through!

As we started down the stairs, we could see the instrumentation that is monitoring the wind going in and out of that original opening.

Measuring the valume of air moving in and out of the cave

We continued down into the cave,

Descending into the cave

and began to see the feature of this cave that makes it unique from all others --

Boxwork on the ceiling

Boxwork.  95% of all known boxwork in the world is found in Wind Cave.

Boxwork was formed when the limestone layers below the surface developed cracks, and these cracks filled in with sediment.  Over time, as water flowed through these passageways, the limestone eroded away, and the stronger sedimentary material in the cracks remained.

Intricate Boxwork

This was the first time we had seen boxwork, and it was truly amazing!

Narrow Passageways

We continued through the narrow passageways, and reached an area where we found some more interesting cave formations --

Frostwork

Frostwork

Popcorn

Popcorn

We continued moving through the narrow passages,

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and occasional our ranger guide, Adam, would stop and tell us about some interesting feature of the cave, or point out some hidden tunnel, or just ask us to think about what it was probably like for those early explorers to venture into unexplored territory, with only a candle to light their way.

Ranger Adam explaining the structure of the cave

Our tour ended at one of the few larger rooms in Wind Cave,

Inside on of the larger rooms

and we took one last look at some boxwork before taking the short path up to the elevator where we exited the cave, ascending 20 stories back to the surface.

More boxwork

An amazing and educational day!

Tuesday, May 7, 2013

Exploring Carlsbad Caverns

May 1st – Wednesday was predicted to be another scorcher, with highs in the upper 90s, so we decided it would be a good afternoon to visit Carlsbad Caverns. 

Carlsbad Caverns

All of the ranger-led tours were booked for the day, but we could do the self-guided Natural Entrance tour and Big Room tour, and decide if we wanted to come back another day for a ranger-led tour deeper into the cave.

It was almost an hour drive down to the cavern from Brantley Lake State Park, and leaving after lunch we got there just in time to still hike down through the Natural Entrance – they only allow visitors to enter through the natural entrance until 2pm, and we bought our tickets at 1:40.  Once again, we used our National Parks pass for free entry!

Carlsbad Caverns are located where the Chihuahuan Desert meets the Guadalupe mountains, and even above ground it is a beautiful park. 

Ocatillo

Resident Housing

 

 

After getting our tickets and stopping in the bathroom, we made our way to the Natural Entrance, where we had a short orientation talk from a Park Ranger.

We’ve been to Mammoth Cave in Kentucky a couple of times, and the natural entrance here looks very similar.

Cave swallows in the natural entrance

We followed the asphalt path around the switchbacks,

Heading down into the Natural Entrance

being especially careful where the rangers were washing the path!  We quickly descended the first 200 feet to Bat Cave,

Bat Cave

where thousands of Mexican free-tailed bats spend their days, exiting the cave at dusk in a massive emergence.  We’d love to see that, too, but probably wouldn’t make the drive back down in the evening.

This area of the cavern is called the twilight area, because some natural sunlight is able to make its way below ground.

Calcite formations

Sediment dripping from the ceiling

 

 

 

From there, we continued into the Main Corridor, gradually descending deeper underground.

Looking into the bottom of the cavern

At this point, there was no more natural light, and if not for the artificial lighting placed in the cavern, we would be in total blackness.  (I was happy to see backup emergency lights in numerous locations throughout our hike!)  Smile  Enjoying the cool hike!

Along the Natural entrance tour, you descend a total of 755 feet below ground, at a pretty steady downward slope, but the hike seems easy with the cool temperature in the cavern.

Every hike should be at 56 degrees!

We went through a few narrow passages,

Watch your head, Nick!

Going through a small opening

and up a few steps, but for the most part it was just an easy downhill walk through beautiful formations!

 

Stalagmites and Stalactites

Smooth walkways

Draperies - very cool!

 

 

We continued past iceberg rock,

Iceberg rock

and found it hard to believe that this was just the path to get us into the heart of the cavern!  There was so much more to see once we reached the Big Room!

Getting even more interesting

We also managed to study a little chemistry along the way, and learned how the various stalagmites and stalactites formed.

Chemistry!

Crevices in the cavern

When we reached the Big Room, we stopped in the rest area for a snack and a break,

We're at the bottom now - very 70s-ish!

and then proceeded to the Big Room Tour. 

Exploring the big room

Up until this point, I had been taking all of the pictures, but from here on Nicolas has the camera and he’s in charge of pictures.  I showed him how to try some with the flash, With the flash

 

 

 

 

 

 

 

as well as some without the flash, to get a different effect.  He had fun with the camera, and got a lot of really good shots!Without the flash

 

 

 

 

 

 

There was SO MUCH to see in the Big Room, which really didn’t seem like a single room, but rather a series of passages and tunnels.

We looked up,

Looking up at the ceiling

we looked down,

I'm not climbing down that ladder!

and all around us!

Almost a column

Lion's Tail

In the Hall of Giants

So much of it looked like ice, but it was rock, and for the most part the formations here at Carlsbad Caverns are no longer growing.

Crystal Spring Dome is one exception --

Crystal Spring Dome

the soda straws and stalactites continue to drip water onto this giant stalagmite, and into the pool beneath it.

We saw several pools along our hike, and the water was so crystal clear you almost couldn’t tell it was there!

Pool - there's water in there!

We continued around the Big Room, with Bryce leading the way,

Goofball!

and passed by several more named features -

Totem Pole

Totem Pole

Temple of the Sun,

Temple of the Sun

Rock of Ages,

Rock of Ages

and Caveman Rock (which really looked more like “Planet of the Apes” to Tom and I!)

Caveman Rock

The one thing that continued to amaze me as we walked around, was that we were able to tour this massive expanse of cavern completely self-guided!  There were rangers around, keeping track of people, and probably making sure that nobody ventured off the trail (which you really couldn’t do inadvertently – it would have to be intentional), but we were basically all on our own down there.

We did see a couple of rangers working – they were climbing down into the “Bottomless Pit” to retrieve trash.

Rangers going into the bottomless pit to pick out trash

There was definitely no shortage of amazing views, but eventually it all started blending together, and we picked up our pace to finish the tour,

Still hamming it up for the camera!

and the silliness started to show!

Oh no!  A dinosaur is eating Mom!

Family Fun!

Lots of soda straws

 

It was a great afternoon, though, and we really enjoyed the numerous caves and rock formations that we saw throughout our hike.  We did decide that these two self-guided tours gave us plenty of exposure to the caverns, and we did not need to return for a ranger-led hike.  Between the Natural Entrance Tour and the Big Room Tour, we spent about 2-1/2 hours in the caverns, and that was plenty of time!

 

 

 

Cave Silhouettes

Some people choose to hike out through the Natural Entrance, too, but to do that you need to be there in the morning.  There was a sign when we reached the Big Room that said that you must begin your hike out by 1pm, in order to reach the Natural Entrance before it is locked at 2:30pm.  I’m not sure how many people actually do that – we only saw one couple exiting as we entered, and we didn’t pass anybody along the way.

So, how did we get out??  Well, the easy way, of course!

Our ride back to the top - complete with an attendant!

More Ocotillo - I love these plants!

 

Another great experience in our full-timing adventure!