Plot hole: The grounder's leader Anya states that the missiles (flares) burned a village to the ground. If this were true, the flares couldn't have flown very far, otherwise that village would have been too far away for the grounders to know about. In a previous episode, when you saw the flares from space, it was obvious the flares traveled hundreds if not thousands of miles away. (00:31:30)
The 100 (2014)
1 plot hole in season 1 - chronological order
Starring: Eliza Taylor, Paige Turco, Marie Avgeropoulos, Thomas McDonell
Revealing mistake: At the river to cross over to Mt Weather, the vine used to swing across the river is just a standard rope, camouflaged. You can see it best when Finn recovers it after Jasper has jumped.
Conner: Tell me again.
Raven: You're the most beautiful broom in a broom closet of brooms.