Thread:Bluetorch5432/@comment-30336577-20170212062528/@comment-33971231-20170305002212

Alright here's a comprehensive procedure I have crafted just for you!
 * 1) Teleport to Mysterious Grotto using the taxi service.
 * 2) Now that you are in front of the PokeCenter, walk to the right (in the direction of the PokeMart)
 * 3) Keep going until you see this narrow passage (where some old man happens to be too)
 * 4) Continue deeper into it then you should find a cave
 * 5) Enter the cave, and look for a hole in the ground with trusses in it
 * 6) You have arrived at the underground lake! Congrats!

You can find: