The Way to the Stars by Kira Bacal - Miri Davner of the scout ship Serengeti enjoys a reputation as an unorthodox commander who nevertheless manages to get the job done. So who better to send on a covert operation behind enemy lines?
Explore the ancient caves of Hang Son Doong, Vietnam. Hang Son Doong is one of the largest caves in the world and features a fast-flowing underground river. For spelunkers, exploring Hang Son Doong is the equivalent of scaling Mount Everest.