Callum, played by Colin Morgan, lives in a remote mountainside shack. filming on the isle of Mull, Scotland, the spot chosen for the shack was remote, boggy and windswept, which caused numerous problems in construction.
Without a job or anything better to do, Callum scours the mountains, bogs and beaches for flotsam and jetsam, and hoards it in and outside his home.
The inside of Callum's shack was cheated, shot inside a stone barn that we 'shrunk' to match the exterior. Here is not only his living quarters, but also where he cleans and sorts his 'treasure'.
Most of the shack's interior was built and dressed with actual found materials. Before building, the art dept 'got into character' and spent several days combing beaches and fields for shells, skulls and anything useful for dressing.