It seems less and less likely that Guillermo del Toro's long-awaited film adaptation of H.P. Lovecraft's novella At the Mountains of Madness will become a reality... which makes it even more heartbreaking to see some of the amazing concepts the director had in mind for his dream project.
Those images came to light when a Reddit user revealed previously unseen pages from del Toro's personal sketchbook, which illustrated some of the amazing images he was tinkering with in preparation for the film.
Sci-fi site io9 shared images from the Imgur gallery, which also contains some incredible monster designs from other del Toro productions including this summer's blockbuster Pacific Rim, as well as his early work on Blade 2 and classics like Hellboy, Pan's Labyrinth and The Devil's Backbone.