Warhammer 40k Cthonian Earthshakers

Cthonian Earthshakers undermine enemy positions with subterranean artillery fire. Some batteries use tremor shells to destabilise strongpoints with deadly quakes. Breacher ordnance, meanwhile, drills to the surface before detonating in a storm of shrapnel, whilst those payloads which initially fail to lock onto their targets hunt them down using geomantic echolocation.