caving
Related Words
spelunkingcavecavernstalactitestalagmitecolumnspeleologygrottokarstlimestonedolomitesinkholeshaftpassagetunnelchamberlabyrinthvoidcrevicefissureundergroundsubterraneanexplorationadventurehelmetcarbidetorchropeharnessascenderdescendercarabinerpitonanchorbelayrappellingabseilingcrawlsqueezemudsiltwaterstreamriversumpfloodhumiditydarknessechomineralcalcitecrystaldripstonebedrockgeologystratigraphyerosionweatheringdissolutionpercolationaquiferbatextremophileecosystemmappingsurveyingcompasstopographyexpeditiongearoverallssafetyrescuecollapsecave-in