A confluence is where integer latitude and longitude lines cross. They are more interesting than the north pole and many many time closer. site
I launched several one day expeditions in 2000 to document the first intentional visits to these places.
Try Topo Map
The official confluence site has an interactive compass where one can click from confluence to confluence. Each page lists multiple site reports. Look for mine listed as #1. Here, starting at Wind River to the north: page
See 2001 Geocaches that I've placed.