### Question
How is the term speleogen defined?


### Answer
The term **speleogen** is defined in *16 U.S.C. § 4302* as the following:

> relief features on the walls, ceiling, and floor of any cave or lava tube which are part of the surrounding bedrock, including but not limited to anastomoses, scallops, meander niches, petromorphs and rock pendants in solution caves and similar features unique to volcanic caves

#### Citation:
  - *16 U.S.C. § 4302*
  - Heading: **CHAPTER 63-FEDERAL CAVE RESOURCES PROTECTION**

