roof_breakdown-2 subway_jctn_roof_breakdn(B_Walden) jctn_rm(Wayne_Singer) jctn_rm_wall_1m(B_Walden) 20-ceiling_drops main_passage-sandy_floor-2-r main_passage-sandy_floor-2 wall_rm stake&passage main_passage-sandy_floor effluorescence breakdown_in_passage-2 sandy_floor&breakdown gallery_view-r surface_above_cave_adj stake_on_surface_adj cheryl@surface_adj 36-surface_near_lavatube_adj 35-surface_near_lavatube_adj 34-view_adj 32-view-r_adj 32-view_adj 30-view_from_butte_adj jctn_in_youngs_cave-r breakdown_in_passage wall_detail sand_fill_detail wall_detail-2 drip_detail wall_detail-2-r surveying_in_jctn_rm jctn_rm_wall(B_Walden) B_Walden@entrance(T_Billings) bench_along_wall subway ledge&drips ceiling_effluorescence hummocky_floor peeling_edge 22-floor_edge-r ledge_in_rm sandy_floor rm_w_sandy_floor transit_in_cave roof_breakdown