Fig. 1

Schematic view of diverse-scale rock bridges in a rockslide. (a) Location of the wedge rockslide at the Libby Dam in 1971. The map was generated by QGIS 3.28.1, https://qgis.org/en/site. (b) Scar of the rockslide. (c) Conceptual model of rock bridges as inferred by Xue et al.²⁸.