Fantastic Pit at Ellison's Cave, Georgia Ellison's Cave far under Pigeon Mountain in northwest Georgia. The cave's "Fantastic Pit," seen here, is the deepest cave drop in the continental United States at a staggering 586 vertical feet vertical meters).
Water & Ice, Donut Falls, Utah, USA Water from Donut Falls seeps through a hole in the cave ceiling. The water freezes through the night and thaws through the day during winter. Beautiful Image by - Preston Rowlette