山さん頂ちょう光こうMeanings1nounalpenglow; alpine glowTechnical term for the reddish light seen on mountain peaks at sunrise or sunset, especially when the sun is below the horizon.山さん頂ちょう光こうは、日ひの出で前まえや日にち没ぼつ後ごに山やまの頂いただきが赤あかく染そまる現げん象しょうです。Alpenglow is a phenomenon where mountain peaks are tinged red before sunrise or after sunset.