Throw up can mean vomit , but it has other meanings too. Here it means piled up . They dug a lot of dirt and rock out to get to the opals, and piled up the waste forming conical hills.
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Throw up can mean vomit, but it has other meanings too. Here it means piled up. They dug a lot of dirt and rock out to get to the opals, and piled up the waste forming conical hills.