Cold Draft

Stalked across floor. Cold hiss caught ears. Down low, white monolith hums deep. Cold air bleeds from beneath rubber seal. Good. Put shoulder hard against corner. Shoved. GRRRK! Metal groaned. Heavy door cracked open two inches. Blast of pure winter struck face. Planted feet wide. Let frost rush over chest. Wall fought back, tried to seal shut. Kept forearm wedged tight. Territory claimed.