Its in the temple of wind in the room with the monsters that aresensitive to sound and pop up from the ground and eat you. Yule need to have a key to open the door to get the bomb bag. have fun...
Okay go to molida and go in a hole in the far right some lady will stop you talk to her then talk to the guy in the hut he wont help you but when you try to leave he'll say something and talk to him...