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Slitherthorn Grotto
Game Newer Super Mario Bros. DS
Level number 8-7
Time 300
World Koopa Country
Level type Lava, Underground
Enemies Hammer Bros. (world map)
Koopa Troopas (Red)
Sledge Bros.
Game Progression
Previous level (8-6) Bombkey Banks
Next level (8-8) Firehoop Inferno

Slitherthorn Grotto (or World 8-7) is the ninth level of Koopa Country in Newer Super Mario Bros. DS.

Slitherthorn Grotto is unlocked by completing Bombkey Banks. Completing it will unlock Firehoop Inferno.

Star Coins

Star Coin 1: The 1st star coin is surrounded by a Spiky Snake Block, jump to get it.

Star Coin 2: After the check point flag using the snake block and letting it fall, fall with the snake block and jump when the Mario has gotten the 2nd star coin.

Star Coin 3: At the end of the level with the Super Star Spiky Snake Block the 3rd star coin is surrounded by a regular snake block. Jump to grab the final star coin.