What is the name of the place where magma erupts throught the crust ??

volcano

No it's not a volcano

My cross word is about 10 spaces

To find the answer to your crossword clue, "the place where magma erupts through the crust," it sounds like you are looking for a word that is about 10 spaces long.

One possible answer is "fissure." A fissure is a long, narrow crack in the Earth's crust where magma can erupt to the surface. To verify if this is the correct answer, you may want to check if it fits into the other intersecting words in your crossword puzzle.

If "fissure" does not fit or is not the correct answer, here is another possibility: "vent." A vent is an opening in the Earth's crust through which lava, gas, and other volcanic materials can erupt.

Remember to consider the intersecting words and letters in your crossword puzzle to confirm if either "fissure" or "vent" is the correct answer for your 10-space crossword clue.