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Red soil and lava rocks dominate the high-altitude landscape, which is also home to endangered and threatened species like the nene, the Hawaiian goose, and the Hawaiian petrel, an endangered seabird.

When he was younger, he said, people knew of species that had gone extinct, such as the Arabian oryx and the dodo, but “you didn’t perceive it as a major ecological problem. And in point of fact, let’s be honest, if the Hawaiian goose disappears, the world doesn’t actually judder in its revolutions.”

The money was used to pay law enforcement staff and rangers, including one who monitors endangered nene, or Hawaiian goose.

The endangered Hawaiian goose was killed Friday.

These include the Hawaiian goose, which nests in the crater.