the northern end of the summit. There was a chimney associated with this foundation until it was blown down during the Ohio Fireworks Derecho that struck the Cleveland region on July 4, 1969. This storm also toppled several hundred trees on Gildersleeve Mountain. The foundation is now in an overgrown area of what used to be the Panorama Point picnic area. Although signage still calls out this area, the panoramic view from this location is no longer viable because trees have been allowed to grow and obscure the view. Also of interest are the remnants of a cistern at the base of an outcropping to the west of the cabin foundation. These may be found by following the base of the rock outcroppings to the west of the Panorama Point area. The water caught by this cistern is filtered through the Sharon conglomerate and seeps out of the base of the outcropping. There are numerous seeps all around Gildersleeve Mountain, and they are the source of the creeks that run off into the Chagrin River watershed. These creeks are augmented by rain and snow melt. They create ravine systems that cut through layers of rock and provide interesting places to study local geology. The Quarry Creek ravine accessible from the Old South Church property cuts down to the Cleveland Shale layer before crossing Eagle road. Natural history Geology Around 380 to 300 million years ago the area was on the Earth's equator as a part of the Pangaea super continent. With the uplifting of the continental plate, the area went from continental shelf to shallow sea. The geology of the area reflects this transition. The lowest visible bedrock is Chagrin Shale. Named for the Chagrin River and easily found in the river valley, Chagrin shale is blue-gray in color, an offshore alluvial, silt shale of the Devonian period. This layer is found below about msl and is found when drilling wells on the slopes of Gildersleeve Mountain. The next layer is Cleveland shale. This is a black shale that is an important source of local fossils. Again Cleveland shale is not visible on Gildersleeve Mountain but can easily be found in the nearby Chagrin River valley between 800 and msl. Bedford shale is found above the Cleveland Shale layer. This material marks the uncertain transition between the Devonian and Pennsylvanian periods in the region. This layer is found in the