Our two hour tour of the Upper Dells wound through narrow canyons and past the towering sandstone cliffs for a 10 mile round trip ride. It included stops at Stand Rock and Witches Gulch. The weather cooperated beautifully, with no more rain and even a little bit of sunshine.
|Waiting for our boat ride|
The sandstone rock formations are among the oldest exposed bedrock on Earth, forming more than 500 million years ago in the early Cambrian period. This particular kind of sandstone is only found in 4 places on Earth: Potsdam, Germany; Potsdam, NY; Zurich, Switzerland; and here. They are remnants of ancient sand dunes, part of a desert that once covered the continent. About 14,000 years ago a large ice dam gave way letting the glacial waters of Lake Wisconsin flood the area, cutting out gorges and leaving behind the towering sandstone cliffs we see today. This is some of the softest rock on Earth and is very porous, allowing even large trees to grow from its surface.
|Aboard the Joliet|
|Going into Witches Gulch|
|The Pied Piper|
Back at the RV's Larry prepared a spaghetti dinner for us, and Steve once again walked away with the dominos game.