Sham ap Soorap is an apprentice aboard a moling train (think whaling ship and you’ll have the right idea). The sea is a sea of rails instead of water; the beasts that molers hunt (and are hunted by) are giant moles, ant lions of unusual size, and burrowing owls that can lift a train from the tracks. Sham’s voyage takes him to a wrecked train that’s carrying some surprising information, and the pictures he finds lead him to Caldera and Dero Shroake, whose parents (like Sham’s) have long been missing.
The Shroakes’ quest to finish their parents’ mission brings Sham into epic danger, to a daring escape from near-certain death, and ultimately on a journey to the end of the railsea: the place where there’s only one track to travel on.
This is a great novel for those who like adventure, suspense, and action, with a dark and funny little surprise at the end of the line. Recommended.