Geologic puzzle poses challenge for hikers at Rockbridge Co. park
NATURAL BRIDGE -- The legs and lungs strain to climb out of the Devils Marbleyard.
This isn't a place for small children or animals: ankles can easily twist here. Or worse.
Like mountain goats, the reckless leap from boulder to boulder while the more timid creep upward on all fours, balancing on one knife-edged boulder before shifting delicately to another.
From the ridgeline above, the angular chunks of Antietam quartzite spill as if from a bucket of children's building blocks, the result of some ancient event that may have occurred with the speed of a bomb blast or as slowly as a river cutting a canyon...
Article by Sam Dean in the Roanoke Times - read the rest of the article here.