shrouded

adj

1. Wearing, or provided with a shroud.
2. Concealed or hidden from sight, as if by a shroud.

   “She wakened in sharp panic, bewildered by the grotesquerie of some half-remembered dream in contrast with the harshness of inclement fact, drowsily realizing that since she had fallen asleep it had come on to rain smartly out of a shrouded sky.”

   “I suspect that this large and complex military railway system, shrouded in official secrecy for most of its operational life, remains unknown to many people.”

verb

1. (form-of, participle, past)simple past and past participle of shroud