Old Man's Cave, eroded along a fracture in the Mississippian Black Hand Sandstone, Ohio. Note the honeycomb weathering on the left..
Block of Mississippian Black Hand Sandstone, fallen from overhanging alcove on Old Man's Creek, Hocking Hills State Park, Ohio.
upper falls and plunge pool over mississippian black hand sandstone on old man's creek, near old man's cave, ohio - 荷金崗州立公園 個照片及圖片檔
upper falls and plunge pool over mississippian black hand sandstone on old man's creek, near old man's cave, ohio - 荷金崗州立公園 個照片及圖片檔
high angle view of crocodile swimming in lake,hocking hills state park,united states,usa - 荷金崗州立公園 個照片及圖片檔