Rising from the central tundra, the Blerian Hills provide the only significant elevation change between the Eceraen range and the Whitewall. These are not mountains; the highest peaks reach perhaps 1,500 feet above the surrounding plain. But in a country of absolute flatness, they loom large.
The hills are composed of ancient volcanic rock, harder than the surrounding sedimentary plain and resistant to glacial erosion. Their presence creates minor wind shadows on their southern slopes, making them one of the few places on the tundra where snow doesn't immediately scour away. This relative shelter has attracted what little life exists in the region.
Lichens grow on the Blerian Hills—the only vegetation in Tundra Oblivio. Small rodents burrow in the rocky soil during summer. Arctic foxes and snow owls hunt the rodents. It's not much of an ecosystem, but it's more than exists anywhere else in the region.
The hills are also rumored to contain ruins—structures buried under ice and rock that predate any known civilization. Expeditions have occasionally reported finding carved stone beneath the permafrost, but the conditions make excavation nearly impossible. Whatever lies buried in the Blerian Hills has remained buried for millennia.