Not to be mistaken with the Civil Defense Caves (which are near by), the Ice Caves are about an hour North outside of Rexburg. The Ice Caves were originally formed as lava tubes. Over the years they have maintained fairly cold temperatures and as moisture and water seeped in, it froze. The ice now remains frozen year round and makes for an awesome time. The ice caves are a few hundred yards deep and require good footwear, warm clothes and a flashlight to navigate. The road to get to these caves is deep, rutted, and super rough. A 4×4 vehicle isn’t required, but you will for sure want a vehicle with good clearance. Any other type of vehicle will most likely get stuck.
The cave itself is a blast. As you are crawling around on the ice, you will get wet. The ice will be thicker or thinner depending on the time of year that you go, but it averages 3-6 feet thick. The ice is very slippery as well, so shoes with more traction are ideal. I went in tennis shoes and didn’t have too many problems.
The cave itself isn’t very deep, but I would plan to spend 2-3 hours round trip. One hour for the long, slow drive out to the cave and the other for exploring the cave and playing around. It’s well worth the trip if you haven’t been.
Head north out of town, as if you’re driving to the sand dunes. The turn off is approximately 28 miles from Jack-in-the-Box (when I drove it, my odometer said exactly 28.2 miles). You will know you have arrived at the turn-off when you cross over a cattle guard (a big grated metal thing that crosses the road), and see a white sign on the right side of the road that says, “Entering Clark County.”
This turnoff goes diagonally northeast. Continue on this dirt road for approximately 3.3 miles. Driving 5-10 mph, it should take about 30 minutes to get there. Going a little faster (around 15mph) you can probably do it in 20 minutes. Keep your eyes open for a gaping hole in the ground. If you aren’t careful, you could very well drive right into the hole, which is at least a 20-foot drop. Climb down into the hole and you should see the cave entrance.