Past participle of the verb "swathe" used adjectivally.
The mountain was swathed in mist.
Гора была окутана туманом.
The baby was swathed in a warm blanket.
Младенец был обернут в теплое одеяло.
The field was swathed in snow.
Поле было покрыто снегом.
Rare/archaic variant of "swathe" meaning to wrap or bind.