Fallout: New Vegas locations project
South Vegas ruins west entrance
This is the west entrance to South Vegas Ruins, located north-east of Poseidon Gas Station and south-west of Chance's Map around the mountains surrounding Red Rock Canyon. South of South Vegas Ruins West Entrance, Cook-Cook and his gang hang out, and will attack the player if leaving the South Vegas Ruins. Some brahmin also present.
The South Vegas Ruins west entrance appears in Fallout: New Vegas.