 Reeds National Park, home of the famous water pocket foals. In the background we can see it. You can see the layers dipping this way from the west and you can't really see the layers on that side. This is a classic monocline and it's a 100 mile long flexure in the Earth's crust. Dave's gonna help show us how it forms. This is the Earth's crust and then 50 to 70 million years ago compressional stress came from the west and caused a bulge. Rocks on the west side were lifted up along a thrust fall about 7,000 feet higher and rocks on the east side. Later uplift during the uplift of the Colorado Plateau about 15 to 20 million years ago left it susceptible to erosion and the top part was eroded off and you got many of the geological features you'll find in the park like monoliths and canyons and arches. The reason the water pocket foal got its name is when these layer the younger layers up here eroded softer layers beneath were exposed and formed small basins in which water gathered in which provided a water source for early settlers.