natural-depression public under physical-object 3685 List Picture As a command %3 n0 natural-depression n2 cavity n0->n2 n3 crater n0->n3 n4 geological-trough n0->n4 n5 natural-basin n0->n5 n6 oceanic-trench n0->n6 n7 valley n0->n7 n8 waterbody-bed n0->n8 n9 caldera n0->n9 n10 kettle-hole n0->n10 n11 lowland n0->n11 n12 pothole n0->n12 n13 sinkhole n0->n13 n1 physical-object n1->n0