Prohibited
Bisti/De-Na-Zin Wilderness
New Mexico, San Juan·Rockhounding
Petrified wood collection is banned throughout Bisti/De-Na-Zin Wilderness by the site's own Wilderness Management Plan — the one material most rockhounds show up hoping to find. General rock and mineral collecting status here isn't clearly published either, so BLM Farmington Field Office treats this as a look-don't-take badlands, not a casual-use collecting ground.
- Petrified wood — the material most visitors come to look for — cannot be collected anywhere in the wilderness; BLM's own visitor page states this is banned under the site's Wilderness Management Plan, separate from and stricter than the standard BLM casual-use rule
- Vertebrate fossils and cultural objects cannot be disturbed or removed without a federal research permit, which is not something a recreational visitor can obtain