Gallego previously helmed Apollo 18 and Open Grave.
Sanctuary follows three documentarians who travel to South America to investigate a town which mysteriously disappeared from the map. The trio are led to the ultimate enigma after a series of misfortunate occurrences: an immense concrete structure located in the middle of the missing town, with no entrances or exits.
“We intend to make a commercial horror film with one of the leading directors of the genre at the helm,” said Atlas Independent’s William Green and Aaron Ginsburg.
