Glass mountain is a state park in Oklahoma just south of the Cimarron River and south of Alva.
Crossing the Cimarron at a major cattle crossing point during the days of the Chisholm Trail.
There is some confusion over the name. It's either Gloss Mountain, or Glass Mountain depending on how poorly you think the surveyor's handwriting was.
A handful of Selenite, which is related to gypsum. This is what gives the mountain its name (no matter which name you use).
It's a nice hike up to the top of the "Mountain."
It seems that the whole mountain is made from this mineral.
Those rails are handy to pull yourself up the trail.
The ride back through Oklahoma