na-adjective, taru-adjective, adverb taking the 'to' particle
desolate and forlorn scene
Archaic literary expression describing a bleak, lonely landscape or atmosphere. Used as a たる adjective or with と adverbially in classical-style writing.
荒涼落莫たる冬の野原を一人歩いた。
I walked alone across the desolate and forlorn winter field.
荒涼 is a more common word meaning 'desolate' or 'bleak', while 荒涼落莫 is an archaic, emphatic four-character compound with a similar meaning.
A four-character compound combining 荒涼 (desolate) and 落莫 (lonely, forlorn). The exact historical derivation is uncertain; it is an archaic literary expression.