Archers Fork Trail Trek, Sept 24-26, 2004
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The Great Cave, is a massive rock house with a smaller cave or rock house adjacent to it. It could comfortably sleep some thirty hunters or Inidan Spies.
Part of the North Country Trail, this trail also provides a loop which can be used by day hikers. The 9.5-mile trail traverses the most scenic parts of the Irish and Jackson Run areas. This area is among the most rugged and unique in the Forest. Hikers will see numerous rock shelters and outcroppings.
One point of interest on this trail will be the Irish Run Natural Bridge. Erosion and natural weathering have created a hole beneath a massive sandstone rock. Natural bridges are uncommon in Ohio; the bridge at Irish Run is one of only 7 in Ohio. The trail takes the hikers over the arch which is some 50 feet long, 16 feet thick, and 39 feet above the ground.
The bridge lies along an upper slope in a steep hollow. It was formed by stream erosion and weathering. The center section of the huge sandstone formation was softer and gradually eroded through and broke off along joint planes forming a hole under the massive rock wall. The remaining rock in the bridge section has a higher iron content and was more resistant to weathering.
Large blocks of sandstone that once formed a window before they broke away are still present in the gully below. The rock is Permian-age quartz sandstone, deposited as sediment when the oceans receded.