Is this the Andean symbol for Pachamama (mother earth)?

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I've loved this design and have been thinking about it as a tattoo for a long time, but I first want to make sure that I understand the symbol. I was told that this spiral is the symbol for Pachamama, aka mother earth. I've seen this symbol a lot in Peruvian and other Andean art, but just wanted to make sure that it really does mean mother earth and not something else.

Thanks, amigos