South Hamerica 1-21

 is the twenty-first level of South Hamerica.

Strategy
Sling Hal and boomerang him back to hit the big round marking stone at the top middle of the two structures. Then, the big stone should falls to the left. Wait until the stone smashes the left structure, sling Bubbles to the right of the big round marking stone at the top left to explodes the TNT boxes and makes the stone rolls down to the right structure and smash them all. Then, a small square marking stone will smash the Foreman Pig below the right structure.