What is the largest burrowing marsupial (by weight)?

Wombat burrows, which can be 10 to 100 feet long and 11.5 feet deep, are highly complex, with interconnecting tunnels, designated sleeping chambers, and sometimes several entrances and exits. Wombats have different burrows for different purposes. Some house only one or two wombats, some house family groups. Wombats may also be sociable, visiting each other’s burrows. The burrows are also sometimes used by other species, such as wallabies, rabbits, foxes, and lizards.