Fig. 1
The satellite image of Qinglin and Yanxia cave (a), the sketch maps and location of the monitor points in Qinglin cave (b) and Yanxia cave (c)
Fig. 1 | Heritage Science
The satellite image of Qinglin and Yanxia cave (a), the sketch maps and location of the monitor points in Qinglin cave (b) and Yanxia cave (c)