Jurisdiction for that area:
The San Bernardino County
Sheriff's Department
Lucerne Valley (760) 248-7328
The Forest Service
Allison Stewart (909) 337-2444
Please report it. In that situation, you would look for footprints and/or tire prints.
If we could figure out how to film these events that would be great.
Please report it so at least there will be a record if the vandalism continues. Please make note of the report number.