Best graphic of cave layout/issues I've seen - via https://t.co/99aHSbmsm4 pic.twitter.com/OVgrEnEWTx— Steve (@SteveInCM) 8 July 2018
Best graphic of cave layout/issues I've seen - via https://t.co/99aHSbmsm4 pic.twitter.com/OVgrEnEWTx