On the corner of the SUNY Plattsburgh campus you will find a bush. There is a geocache somewhere in this bush, I promise.
This is a common route for students to walk from one end of campus to the other. While you're around, check out the new buildings on campus. The Sciences moved from Beaumont (the hall right next to the cache) to Hudson, the big one right across the road. There is also a brand new building for Business and Economics, AuSable Hall, closest to the hospital.