Fire the first Yellow bird into the foot of the top-left structure, causing it to topple leftward onto the jewels below. With the next Yellow bird, take out the stalactites above the bridge on the far-right. Be sure to hit them low enough so that the Yellow bird falls and triggers the TNT below. Try to roll on the jewels and break them for bonus points too. If you're very lucky, the Yellow bird will break all of the jewels and blow up all of the TNTs below and then pop all of the pigs there (If this happen, you just need to clear the top with the Black Bird). Place the Black bird into the top-central structure to clear any pigs there, but mostly for a path to the bottom. Lob the Yellow bird to trigger the TNT in the middle of the level and the level will be clear. If you can, lob the Black bird to the right rope (there are two ropes hanging a Medium Pig sitting on two small stones at the left side) and he'll go all the way down to the TNTs and you'll get bonus points with the Yellow Bird.