My three-year-old daughter has just been telling me about an episode of The Next Generation which was on earlier.
The man runned on the sand and he fell in the black thing, and he came up a black snowman.
Followed by
The mans had their orange torches, and they threw fire on the black snowman and it melted.
My curiosity is piqued; can anyone help me identify this episode where phaser fire (I presume) melts a black creature in a sandy environment?