Wiltjas are shelters made by the Pitjantjatjara, Yankunytjatjara and other Aboriginal Australian peoples.Australian Indigenous tools and technology - Australia's Culture Portal They are temporary dwellings, and are abandoned and rebuilt rather than maintained. Open and semi-circular, wiltjas are meant primarily as a defence against the heat of the sun, and are not an effective shelter from rain.
See also Humpy
References
Photographs Aboriginal people outside a wiltja shelter made of bark and branches c.1914 - State Library of Victoria Aboriginal bough shelter known as a “wiltja”, at Desert Tracks Pitjantjatjara Tours camp - Alamy