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In the pilot of the CW’s The 100, Jaha (Isaiah Washington) tells the 100 that they are supposed to land on Mount Weather, which is actually a real government facility in Virginia. After falling to Earth, however, the delinquents find out, as Clarke (Eliza Taylor) so eloquently puts it, “They dropped us on the wrong damn mountain.” They’re near Mount Weather, since Clarke can see it in the distance, but exactly how close is somewhat uncertain until Season 2, Episode 11, when Clarke says it’s an eight-hour walk (approximately 25 miles) from Camp Jaha to Mount Weather.

The Grounder village featured in the second season is called Tondc, which was obviously Washington, D.C., (WashingTON, D.C.) pre-nuclear apocalypse. In the Season 2 premiere, Lincoln (Ricky Whittle) brings Octavia (Marie Avgeropoulos) to a nearby Grounder village, and they pass the remains of the Lincoln Memorial along the way. The Trikru has settled in the general Washington, D.C., area, although only one village is actually called Tondc.

Episode 2x01: Octavia lies at the foot of the decaying Lincoln Memorial.

Episode 2x01: Lincoln’s drawing of “a statue near [his] village.”

Episode 2x05: Octavia brings Clarke and Bellamy (Bob Morley) to the Lincoln Memorial.

Given that the 100 accidentally wander into Grounder territory in the pilot (and all throughout the series), it seems likely that Camp Jaha is relatively close to modern-day Washington, D.C. The real Mount Weather is about 48 miles from Washington, D.C., so in the world of The 100, Camp Jaha would probably be about halfway between Mount Weather and Tondc, but probably a bit closer to Tondc.

As for the other locations, the “Dead Zone” Jaha lands in at the beginning of Season 2 is somewhere near New York City, since the ruins of the Manhattan Bridge are visible just beyond his crash site.

Episode 2x02: Jaha’s crash site with the Manhattan Bridge in the background.

Obviously, there are specific landmarks that make each location harder to place (such as the river, or the destroyed amusement park seen in the opening credits and in Season 2, Episode 3, confirmed by creator Jason Rothenberg here to be the same park, or different mountain ranges), but the show’s main locations seem to fall within this basic geography. A few other locations have been mentioned (such as Polis and the Ice Nation), although the show has not revealed where exactly they are yet.

The Ferris wheel and roller coaster from the opening credits, confirmed as the remnants of Six Flags America by writer Aaron Ginsburg.