Radiated Tortoises (Astrochelys radiata)

Do these Radiated Tortoise's live outside all year long? or do they have a night quarters?

@Escher Nicholls They live outdoors all year round as do all their larger reptiles (monitors, rhino iguanas, boas, pythons, alligators and crocodiles). The tortoises do have a small glass-fronted den with a heat lamp connected to the outdoor enclosure when required.