We finally know how a fault that gave rise to Denali, North America's highest mountain, first formed. According to new research, the Denali Fault is actually an ancient suture mark where two land ...

But above everything, it is impossible not to be struck by the raw, natural beauty all around you as you make your way to the top of this fault-block mountain in southeastern Oregon.

They learned about four mountain types: domed, folded, fault-block, and volcanic mountains, which are all visible from the top of Buttermilk — one of the reasons the class took to the summit for their ...