UNITED NEWS INTERNATIONAL (UNI) — The world’s tallest active geyser has suddenly gotten a lot more active.

U.S. scientists at the Yellowstone Volcano Observatory say Steamboat Geyser has erupted for the first time in four years.

But it wasn’t just a one-off event.

Steamboat — which can go decades between eruptions — has thrice spewed hot water in just the past six weeks.

These eruptions appear to be much smaller than those that occurred in 2013 and 2014, but scientists say the two that occurred last month still spouted out 200-400 cubic meters of water.

That’s ten times what Yellowstone tourists line up to see from Old Faithful on a daily basis.

What does it all mean?

Scientists are ruminating on that right now.

It could simply be random geological gymnastics. Unlike old faithful, after all, most geysers are remarkably random.

But scientists stress that it does not foretell a volcanic eruption at Yellowstone.