The Last Abyss Book 3 – Paperback

The chimney breathes. Warm water rises through a crack in the labyrinth that the original survey filed as cold rock, and the climb up it is the only route left that does not pass the den.

Noah holds the group’s clock against four cold bodies and his own narrowing margin. Jax calls the numbers in a flat voice while the sodalime walks the wrong curve. Ryder reads the stone with a palm flat on limestone and feels something underneath that is not geology any more. Vance is the one who has to decide which exit the four of them will reach.

Above the chimney a patrol line crosses a shelf nobody has walked in forty years. Below the chimney the labyrinth has a geometry the chart does not share. One of the animals is a female that reads displacement at seven metres. The other is a male that reads a heartbeat at twice that.

Thirty metres owed in stops they do not have the gas for, and the only route out is the one with the pair in it.