Sweetwater Wetlands  LbNA # 45848 (ARCHIVED)

From the parking lot at Sweetwater Wetlands:
http://www.tucsonaudubon.org/birding/sweetwater.htm
go east on the paved trail and look for the sign in book. Cross the bridge on your left. Take the dirt trail to the left. Go to the third cement bench. The letterbox is under a large rock to the left of the Palo Verde behind the bench.