Reclaimed gravel pit, now mostly overgrown with new trees.
Octavia falls down a hill while running from a mysterious pursuer in episode 1x05 "Twilight's Last Gleaming".
Lexa leads a procession with Finn's body to the Grounder town of Tondc in episode 2x09 "Remember Me".
Emori joins Murphy and they attempt another ambush only for Murphy to be taken captive in episode 3x05 "Hakeldama".
The SGC mining crew is attacked by a tribe of Unas in episode 7x07 "Enemy Mine".
K'tano leads and trains a group of free Jaffa in episode 5x18 "The Warrior".
Chance and Maria Gallego meet up with a convoy in episode 1x07 "Salvage & Reclamation".