Lost River - Karst Information Portal

idge summits in the Crawford Upland. No
remnants are found in the Mitchell Plain area.
2. The Mitchell Plain surface (710 to
760 feet above sea level) formed during late
Oligocene to early Miocene time. Lower
surface represented by flat areas of exposed
limestone between sinkholes in the Mitchell
Plain. Not recognized as a cave development
period due to the minimal exposed limestone
when the surface was developed (Palmer and
Palmer, 1975). See Figure 4.
Geomorphic History of the Mitchell Plain
3. The Blue River Strath–East Fork I surface
(600 to 650 feet above sea level) formed during
early Pleistocene time. Recognized by remnants
of a strath terrace in the lower portions of the
Mitchell Plain and a bedrock terrace along
the East Fork White River. This surface was
interpreted to be the early cave forming base
level for the upper levels of Wyandotte and
Blue Spring caves.
Joe Sibert, Manager of Wyandotte, standing second from left, holding flares or
roman candles. From the Gordon Smith photo collection.
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