It’s at the visitors center inside a t-Rex skull during the Mesozoic special operation. Does anyone know what it opens? I haven’t found it yet while stacking up on black market currency. only key i heard of there is for the red loot crate near the pterodactyl that give more moneda. I haven’t come across that chest yet. Danny Trejo has arrived in Yara, and his new Special Operation means a new hidden stash. By Mark Delaney on December 20, 2021 at 1:34PM PST. Comments. Where to buy. Far Cry 6. $24.94 at Amazon $44 This is a full guide on how to get the key and the 400 Moneda stash. This is the easiest map to get this reward. I hope you enjoy the video. I enjoy reading LxJ3g.