Do you like planetary caves?
Here's an article with links to two OPEN ACCESS (whoo-hoo!) papers in JGR Planets.
Article describes science and engineering issues and needs around planetary cave research. And gives an inventory of suspected caves around the Solar System.
(Am co-author on both. My Titan cave paper is in proof stage, I'll toot that out at a later point.)
https://news.nau.edu/space-exploration-goes-underground/

#astrodon
#PlanetaryCaves
#astrobiology
#karst