(1)  While in a public use site it is prohibited to: 

(a)  damage, destroy, or possess any natural features, developed features, or vegetation;

(b)  damage, destroy, possess, or permit the disturbance or removal of topsoil or subsoil, nonfossilized and fossilized paleontological specimens, cultural or archeological resources, or the parts thereof;

(c)  gather or cut firewood for offsite use, except where otherwise authorized by the department;

(d)  design, develop, construct, place, or occupy any unauthorized structure, roads, trails, signs, or landscape features;

(e)  place or leave a geocache or other object without written permission from the department; or

(f)  use a mineral or metal detector, magnetometer, or other metal detecting device at public use sites without written permission from the department.

(2) Unauthorized structures are subject to removal or impoundment.