# Mystic Caverns and Crystal Dome

- **Country:** United States
- **Depth:** 110 ft
- **Access:** closed
- **Geology:** Limestone
- **Language:** English
- **Location:** Marble Falls, Arkansas
- **Discovery:** c. 1850
- **Photo Alt:** Flowstone in Mystic Caverns
- **Show Cave:** c. 1928
- **Photo Caption:** Flowstone in Mystic Caverns
- **Entrance Count:** 2

Mystic Caverns and Crystal Dome are former show caves located between the cities of Jasper and Harrison, in the state of Arkansas, U.S., on the Arkansas Highway 7 Scenic Byway near the defunct amusement park Dogpatch USA. Sometimes called "the twin caves" because they are within of each other, the two caves maintain a year-round temperature of 58 °F, contain more formations per foot than any other caves in Arkansas, and are open for public tours year-round except during the January flooding season.

![Photo of Mystic Caverns and Crystal Dome](https://upload.wikimedia.org/wikipedia/commons/1/1e/Mystic_Caverns%2C_Shoggoth%3F.jpg)

**Source:** https://en.wikipedia.org/wiki/Mystic_Caverns_and_Crystal_Dome (Wikipedia, CC BY-SA)