https://tortoiseforum.org/threads/closed-chambers.32333/What would be a proper closed chamber?
https://tortoiseforum.org/threads/our-new-closed-chamber-for-our-new-group-of-tortoises.138430/
https://tortoiseforum.org/threads/2015-growth-experiment.119874/
http://www.apcages.com/home/terrestrial/terrestrial.htm