This is a hike is right outside of Great Sand Dunes National Park, that leads to a 30ft. cave waterfall.
Driving towards the Sand Dunes, you will see a sign marker that indicates the road up to Zapata Falls. Turn right onto the road a follow it for about 2 miles until you hit the parking lot at the top. The road is in pretty rough condition so if your car doesn't have high clearance make sure you take it slow. Once you reach the parking lot, you will see an 10ft sign indicating the trail head. You will follow the trail up for 1/2 mile leading to the cave entrance. Depending on the time of year you will continue into the cave, either on ice or through water and you will see the falls in the back of the cave.