43 CFR 423.29 - Natural and cultural resources.
(a) You must not destroy, injure, deface, remove, search for, disturb, or alter natural resources or cultural resources, including abandoned buildings or structures, on or in Reclamation facilities, lands, or waterbodies except in accordance with § 423.29(g) and other applicable Federal, State, and local laws.
(c) You must not drop, place, throw, or roll rocks or other items inside, into, at, or down, caves, caverns, valleys, canyons, mountainsides, thermal features, or other natural formations.
(d) You may bring firewood to or gather dead wood on Reclamation lands for fires as allowed under § 423.31. You must not damage or remove any live tree or part thereof except with proper authorization under 43 CFR part 429.
(e) You must not walk on, climb, enter, ascend, descend, or traverse cultural resources on Reclamation lands, including monuments or statues, except as specifically allowed in special use areas designated by an authorized official under subpart E of this part 423.
(f) You must not possess a metal detector or other geophysical discovery device, or use a metal detector or other geophysical discovery techniques to locate or recover subsurface objects or features on Reclamation lands, except:
(g) You may engage in renewable natural resource gathering activities such as picking berries and mushrooms, collecting antlers, and other similar activities as regulated by this part 423 and other applicable Federal, State, and local laws.