The Hollow Earth pack is situated underneath a mountain jutted up against the sea. South Seaside lies to the West, and to the East lies a Mangrove swamp where Shiva grew up with her human.
A series of tunnels connect underground, with main entrances to the West and North. For security, the borders expand two miles from the North Entrance. A single tunnel filters out into the sea itself, though the Sea Cave is difficult to reach through the caves themselves. Currently, only Shiva knows the true path to the cave, and has made it her home, when she is not traveling.
At several points, caves open up to outcroppings in the rocks, where the sun filters through and any wolf can go an sun themselves. Within the caverns are antichambers, where wolves can claim and make their dens.