The intense freeze-and-thaw during the Ice Age cracked open the sandstone bedrock and produced jumbles of car-sized blocks of rock.
(The intense freeze-and-thaw during the Ice Age; cracked; open; the sandstone bedrock) (The intense freeze-and-thaw during the Ice Age; produced; jumbles of car-sized blocks of rock)
The intense freeze-and-thaw during the Ice Age The intense freeze-and-thaw during the Ice Age
cracked produced
open the sandstone bedrock
jumbles of car-sized blocks of rock