樹じゅ海かい

noun

sea of trees; dense forest expanse

Evokes a vast, unbroken stretch of forest, often with a poetic or slightly ominous feel. Frequently associated with Aokigahara (青木ヶ原樹海).

• 富ふ士じ山さんの麓ふもとには広こう大だいな樹じゅ海かいが広ひろがっている。

  A vast sea of trees spreads out at the foot of Mount Fuji.