Fig. 1: Overview of possible microbial habitats associated with volcanic terrains.
From: Young volcanic terrains are windows into early microbial colonization

Habitats for microorganisms associated with volcanic terrains including long-lived and ephemeral hot springs, fumaroles, lava tubes, and lava rocks, as well as melted ice and associated products from lava–ice interactions. Major abiotic factors discussed in this paper are indicated by circled text.