Tunnel Cave Falls is a waterfall on Indian Creek in Newton County, Arkansas, in the Boston Mountains region, with a total height of about 31 feet. It lies about 17.1 miles southwest of Harrison and roughly 48.2 miles east of Springdale as the crow flies.
At 31 feet it is on the modest side for Arkansas, where the typical waterfall with a recorded height stands around 34 feet; it ranks 58th of 110. The water comes down as a horsetail, where the water keeps some contact with the bedrock as it falls.
The Boston Mountains are the highest and most rugged part of the Ozarks, deeply dissected sandstone plateaus covered in oak-hickory forest with shortleaf pine. Clear creeks cut narrow hollows with numerous bluff-line waterfalls, at their best in spring. Indian Creek carries 2 recorded waterfalls, and Tunnel Cave Falls is the tallest of them.
There are 42 recorded waterfalls in Newton County. Copperhead Falls, a 13-foot cascade waterfall, is under a mile away. Hammerschmidt Falls, a 43-foot curtain waterfall, is under a mile away. Lower Fishtrap Falls, is about 2.4 miles away.
Tunnel Cave Falls is located at 36.0296° N, 93.2876° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The creek name is confirmed against the federal Geographic Names Information System. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this waterfall yet.