Flamers were brought in by the crew, everyone standing well back of the wash as they fired. The heat of blessed Prometheum bathed the ancient stone, sending ice hissing into vapour in great billowing clouds. Firing in bursts to conserve fuel, the weapon specialists set about thawing the door, mainly focusing on the hinges. When they had finished Felidae, protected from any residual toxins by her armour, stepped up and heaved, bracing her shoulder against the door. Muscles straining, servos hissing, the armour whining in protest the whole time, she forced the door open. It was massively heavy, balanced for use underwater. The grinding of stone against stone left marks on the floor, throwing up chips of ice from the ground.

At last, without even any help, Felidae had forced the door wide enough to allow access. The interior of the building was covered in ice. Minimal excavation seemed to have happened in here, probably as a result of access being so difficult. Armed with modern tools, carving through the thicker areas wouldn't be too challenging, but there had been a small amount of tunneling done even here. Presumably there was another entrance somewhere. While there was a lot of machinery, or what looked like it passed for machinery in terms of the Xenos, it was all focused around the odd depressions in the walls. Some of these, dimly visible under thick layers of ice, appeared to be covered by bulging membranes. Others were empty, frozen scraps of organic material clinging to their edges.