first you have to have a bomb bag and you ether pick up more bombs or you buy them
Plant bombs!
In Dodongo's Cavern.
First of all, it depends on which Zelda game you have. Second, they are called Bombchus.
go to barnes bombs in kakariko village
you can get then from the shops on the game
You have to buy them in the bomb shop at Koriki (sorry for spelling) Village
you throw bombs at them.
Bombs.
in the second temple on isle of gust bottom of northwest sea chart
to get more bombs you need to sink to the bottom of the lake with the iron boots then you need to talk to the zoras down there one of them will sell you bombs
You use bombs. You can throw them a the weakspots (cracks) in the wall.
go to the far left part of the counter, and talk to Barns