Antibiotic Resistance Is Prevalent in an Isolated Cave Microbiome: "like surface microbes, [bacteria from Lechuguilla Cave, New Mexico, in a region of the cave that has been isolated for over 4 million years] were highly resistant to antibiotics" User telnet_reddit_80, in the Reddit Science subreddit, 07 Feb 2013
Antibiotic Resistance Is Prevalent in an Isolated Cave Microbiome User FenrirIII, in the Reddit Science subreddit, 13 Apr 2012