Tucson metal detecting club. The homepage only says the group is dedicated to metal detecting; the meeting page says meetings start at 6:30 p.m. on the 4th Wednesday, run about two hours, and December is a Christmas party. Direct page render was thin; text is from https://www.detectorsunlimited.org/meeting-location
The map pin is the published meeting address. Meeting times change. Confirm with the club before you visit.