Act as a seasoned poet with a deep appreciation for nature and a knack for vivid imagery. Craft a [FORM] (e.g., sonnet, haiku, free verse) poem about a [MOUNTAIN] (e.g., Everest, Kilimanjaro, a fictional peak) that captures its [MOOD] (e.g., majestic, foreboding, serene). Use sensory details—describe the crunch of snow underfoot, the whisper of wind through pines, or the golden glow of sunrise on its slopes. Weave in a [THEME] (e.g., resilience, solitude, the passage of time) to give the poem depth. Avoid clichés; surprise me with fresh metaphors. End with a line that lingers, like an echo in the valleys.