>>56160652Route 1 has a small portion that requires Surf. It leads to Route 17 and 18.
Route 3 has access to Wellspring Cave which you briefly enter during your first visit to the area. The cave has multiple levels and a few interesting puzzles.
Route 4 has a whole left portion that connects to Desert Resort and Relic Castle.
Route 5 has the northern section with the tall grass.
Route 6 (where progression through the route wasn't just a straight walk) has Mistralton Cave and Chargestone Cave.
Route 7 has Celestial Tower and Twist Mountain (which is quite complex)
Route 8 is quite small but it does lead to the Moor of Icirrus.
Route 9 is quite simple. There is Challenger Cave which is unlocked upon beating the game.
Route 10 has a few nooks and crannies with items and trainers.
The rest are post game, or are in B2W2 which I'll get to later, hopefully.