How was the Devils Den formed?
How was the Devils Den formed? History. Devil's Den was formed with Little Round Top (to the east) and Big Round Top (southeast) by periglacial frost wedging of the igneous landform formed 200 million years ago when a diabase sill intruded through the Triassic Gettysburg plain. The feature acquired its foreboding name prior to the 1863 battle.
What is an interesting fact about Devils Den?
Devil's Den was formed with Little Round Top (to the east) and Big Round Top (southeast) by periglacial frost wedging of the igneous landform formed 200 million years ago when a diabase sill intruded through the Triassic Gettysburg plain. The feature acquired its foreboding name prior to the 1863 battle.