Footsteps on gravel.
Rubber soled Flipflops were worn.
It also sounds like bones being crushed. 鬆脆礫石上的腳步聲 聲道:2 類型:wav OWI、footsteps、gravel、foot、steps、step、feet、walk、crunchy、footstep、walking、crunch、foley OWI、步伐、碎石、腳丫子、腳步、步、腳、步行、脆脆、腳步、步行、緊縮、弗利 資料來源:freesound ( https://freesound.org )