Over the past year, 16-year-old Swedish climate activist Greta Thunberg has become one of the most famous teenagers on Earth.

Billions have seen her face, heard her speak, read her words or, at the very least, have been made aware of her cause through the global youth climate strike movement she inspired.

As such, a U.S. woman recently noticed how much someone in a 120-year-old photo hanging at Seattle's Pike Place Market looks like the young environmentalist.

Greta Thunberg loses hope in changing current world’s mind about Climate Change, decides to travel back in time to when it all started pic.twitter.com/I7ikBtNzJ4

— Ahmed Raafat @ Thought Bubble (@TheAhmedRaafat) November 20, 2019

Allison White, who lives in Washington State, shared an image of the historical photo on Facebook last week, writing "Greta Thunberg is a TIME TRAVELER."

The photo, taken by Eric Hegg in 1898, shows three children operating a gold mine rocker in Dominon Creek in Canada's Yukon. It can be found in the University of Washington's archives under the subjects "gold mining" and "child labor."

It is not known how old the girl in the photo is, but she bears a striking resemblance to Thunberg — signature side-braid and all.

Greta Thunberg is a time traveller!!! Here she is in 1898 gold mining in the Yukon 120 years ago!!!! pic.twitter.com/sdouyEndzS

— Ernst Blowfeld (@BLOWFELD7) November 20, 2019

It's uncanny enough to turn heads and prompt Twitter users to joke about Thunberg's immortality.

She's obviously a vampire. But I see your point. It's crazy that she was turned so young. I agree.

— Richard De Leon (@downwritemental) November 20, 2019

Many are citing the photo as example of the teen's time-travelling abilities.

Here we see @GretaThunberg fake ass lecturing us about the environment when what she REALLY needs to be doing is sharing that Time Travel sauce pic.twitter.com/89tRmU1Fhp

— George Stebbins (@Wolfalor) November 20, 2019

They're joking, for the most part... I think.

conspiracy theory:
greta thunberg IS a time traveller and will travel again in 120 years to tell our grandchildren (if they were lucky to survive) how she and the other env. activists tried so hard to make us do something about our dying planet but we, ofc, fucked it up.

— ラミース♡| Luciee♡° (@silvverwolff) November 20, 2019

"Who knew? The ones who don't believe in global warming believe in time travel," wrote one Twitter user. "Apparently, Greta Thunberg
 is being accused of time travel. According to her opponents, she is over 120, which kind of explains the knowledge advantage she has over the naysayers."

Ok, if Greta Thunberg knows how to time travel, there wouldn't be any other way to alter climate change than stare angrily to Donald Trump?
Nice theory though. pic.twitter.com/yg2jTYx2iq

— Joni Suikeli (@JoniSuikeli) November 20, 2019

Whatever their beliefs about the possibility of time travel, everybody is fascinated by the Thunberg doppelganger, and they want more.

"Please Mr Spielberg buy rights to make the #GretaThunberg time travel movie we’re waiting for," wrote one Twitter user on Wednesday as the photo circulated widely.

"Greta, if it's true that you can travel through time," wrote another, "take me to the beginning of Season 9."