How do you get to the fairy on death mountian in zelda ocarina of time?

Get the bomb bag in Dodongo's Cavern. Bomb the rocks on the trail that leads toward the top of the mountain. After bombing the rocks, pass the hole in the ground (only a cow inside) and pass the falling rocks (You can roll to Dodge, or use a Hylian Shield). Bomb the rupee wall and enter to get to the Great Fairy's Fountain.