Lost River Caverns

Lost River Caverns
Rentzeimer's Cave Lost Cave
Lost River Caverns
Location	Hellertown, Pennsylvania, U.S.
Coordinates	40°34′51″N 75°19′51″W / 40.58083°N 75.33083°W / 40.58083; -75.33083
Depth	80 ft (24 m)
Length	1,200 ft (370 m)
Discovery	1883
Geology	Limestone
Entrances	1
Difficulty	easy
Hazards	occasionally rocks are slippery
Access	Fee

Lost River Caverns is a natural limestone cavern located on the east side of Hellertown, Pennsylvania, United States, and consisting of five chambers. The caverns were formed by the karstification or dissolving of the limestone by water. In the past the caverns have been called Rentzheimer's Cave and Lost Cave.^[1] The "Lost River", so named because the source and mouth of the river have not yet been discovered, flows through it. The temperature in the cave is consistently close to 52 °F (11 °C). There is a gift shop and a museum before the entrance.

It was discovered in 1883 when a limestone quarry cut into it. It is open to the public.

• Lost River Caverns web site

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