洞穴

Traditional form:

洞穴

Pinyin (reading):

dòngxué

Definitions:

• cave
• cavern

Characters:

• 洞 - cave, grotto, hole, ravine
• 穴 - cave, den, hole

Traditional characters:

• 洞 - cave, grotto, hole, ravine
• 穴 - cave, den, hole