Aurora australis curtain over Sapporo alpine coast

Cool blue twilight washes the sky above a rugged southern coastline where thick mist rests on the valley floor. A faint green aurora australis stretches horizontally across the darkening horizon, its edges soft and diffuse against the heavy atmospheric haze. The alpine saddle in the foreground reveals rough, damp rock and sparse winter grasses, their textures sharpened by the low light. Below, the coastline curves into shadow, with the water barely visible through the dense fog. The light remains flat and uniform, casting no distinct shadows, only a deep, silent gradient from the pale horizon to the indigo zenith. A thin band of white mist separates the dark water from the faint glow of the celestial display.