Ausable Chasm (ôsāˈbəl) [key], gorge, 2 mi (3.2 km) long, from 20 to 50 ft (6–15 m) wide, from 100 to 200 ft (30–61 m) deep, NE N.Y. The chasm, with its rapids, waterfalls, and curious rock formations, is a popular tourist attraction; Rainbow Falls, 75 ft (23 m) high, is at the southern end of the gorge. The Ausable, a river rising in the Adirondack Mts. and flowing NE to Lake Champlain, continues to carve out the gorge as it passes over the sandstone bedrock.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
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