Is Metal Detecting allowed in Montana State parks? NO.
There are rules in specific parks that mention that Metal Detectors are not allow, nor is digging, collecting or removing artifacts. Makoshika state park is mentioned HERE and Rosebud Battlefield State park is mentioned HERE.
The Montana Rule 12.8.207 on Property Disturbance can be found HERE states:
12.8.207 PROPERTY DISTURBANCE
(1) No person may destroy, deface, injure, remove, or otherwise damage any natural or improved property or willfully or negligently cut, destroy, or mutilate any tree, shrub, or plant, or any geological, historical, or archaeological feature, not including flowers, berries, cones, or fallen dead wood.
(2) No person may disturb or remove the topsoil cover or permit the disturbance or removal of topsoil cover. This prohibits digging for worms, burying of garbage, and allowing pets to dig holes.
FMDAC Disclaimer: FMDAC assumes no responsibility for any person who knowingly or accidentally violates any state park regulation. Although FMDAC will try to keep this information current we cannot anticipate how each regulation will be interpreted by a specific park department, park employee or other government employee. It is the sole responsibility of each individual to know and obey the regulations of the park or area they are visiting and or metal detecting.