HONOLULU (AP) — For the first time in recorded history, a melted iceberg the size of Greenland has been discovered inside the summit crater of Hawaii’s Kilauea volcano, and experts say this new evidence of climate change could cause more explosive volcanic eruptions.

Scientists first noticed the mysterious green liquid at the bottom of the crater a week ago, but U.S. Geological Survey said it couldn’t possibly be Greenland until noted vulcanologist Hillary Clinton tweeted the news.

“A massive heat wave has caused the Greenland ice sheet to melt inside Kilauea,” Hillary tweeted. “Vote accordingly.”

The tweet linked to an Associated Press story that confirmed her analysis.

“Walloped by heat wave, Greenland melts inside volcano,” blared the AP headline. The story concluded that “an eruption lasting more than 30 years could wipe out Iceland and the Arctic Circle if you don’t vote Democrat, scientists say.”