North Star is the "best" shore accessible "wall" dive. The other "walls" are actually steep slopes. North Star drops straight down from about 40 feet to 90-100 feet before sloping sand begins. Lots of overhangs and slots with a curving wall so something is in sunlight all day. Easy entry with short 7-8 minute swim to the wall. Very few fish (empty caves, overhangs) throughout St. Croix (over fished and hunted). This and Rust-op Twist are the best shore dives, North Star having best topography.