After 6 Years I've Discovered This Secret Mission in GTA 5! (Mount Chiliad Door Opened)

GTA 5 The Epsilon Program Meeting on Mount Chiliad! (Secret Easter Egg) PART 2: https://www.youtube.com/watch?v=u8mD8i-Li80 MY SECOND GTA 5 CHANNEL: https://bit.ly/2vJBklD What Happens If You Visit This Island in GTA 5? (Leatherface Easter Egg) https://www.youtube.com/watch?v=-Zr_6Dl6aEA What Happens If You Follow This Cop in GTA 5? (Secret Police Lamborghini Location) https://www.youtube.com/watch?v=-MG_mY6RYLA What Happens If You Visit Michael's Body After His Fall in GTA 5? (Michael's Secr