Solid ground?

Go to any area where you can ride Epona.Call her and get on her.Position yourself above the area of ground you wish to fall through.Press 'A' to dismount Epona, then while Link is in the middle of dismounting and not touching either the ground or Epona do the CC trick.Continue doing the CC trick for a couple of seconds then push it back in. If done correctly Link will have fallen through the ground where he would have normally landed.If it didn't work try holding forward on the analog stick while Link is dismounting and while doing the CC trick.Do this at Lake Hylia to get under the ground then go through the warp to Zora's Domain, under the ice!