(archaic, of sky or ocean) blue / (archaic, of vegetation) dark green; luxuriantly green / (archaic) dim, gloomy

a mountain (large mass of earth and rock) or (large) hill / a mine (excavation usually consisting of small tunnels) / a heap, pile / the top or high part of an object / a chance, gamble / a climax, peak

to feel / to sense / to experience

mysterious

mystery

(archaic) antique, old-fashioned / (colloquial) ancient

ancient times, antiquity, remote ages

(idiomatic) to feel inferior, to feel small

mysticism

to mystify; to make a mystery of