Caves are dark, underground hollow spaces with relatively constant temperature, high humidity, and limited nutrients. Many caves are associated with karst topog

The deep subsurface is, in addition to space, one of the last unknown frontiers to human kind. A significant part of life on Earth resides in the deep subsurfac

To shed light on the latest breakthroughs and cutting-edge research, Frontiers in Microbiology presents this compelling series of Research Topics. Spearheaded b