- "Thinning the veil"
- —Book's tag-line
The Damnation of Pythos is the thirtieth volume in the Horus Heresy series of novels.
In the aftermath of the Drop Site Massacre at Istvaan V, a battered and bloodied force of Iron Hands, Raven Guard and Salamanders regroups on a seemingly insignificant Death World. Fending off attacks from all manner of monstrous creatures, the fractious allies find hope in the form of human refugees fleeing from the growing stellar civil war, and cast adrift upon the tides of the Warp. But even as the Space Marines carve out a sanctuary for them in the jungles of Pythos, a darkness gathers that threatens to consume them all...
- The Damnation of Pythos (Novel) by David Annandale
- Black Library - The Damnation of Pythos