caverned

The rock was caverned out to make a tunnel.

挖出岩石。

Caverned in night under the drifted snow,

浮冰积雪中夜，

The Chu Prince Mausoleum is a seldom seen and except ionally big caverned catacomb with the gigantic project for a prince in the Western Han Dynasty.

狮子山楚王陵：楚王陵“因山为陵，凿石为藏”，形制奇特，程浩大，完全在岩石之中凿建而成，是一座罕见的特大型西汉诸侯王葬。