[{"data":1,"prerenderedAt":215},["ShallowReactive",2],{"leaderboard-total":3,"spot-seo-tank-cave-tantanoola":9,"spot-tank-cave-tantanoola":51},{"entries":4,"total":5,"period":6,"type":7,"generated_at":8},[],0,"all_time","reports","2026-10-03T06:32:05.526386Z",{"title":10,"description":11,"canonical_url":12,"og_image":13,"structured_data":14,"breadcrumbs":44},"Snorkeling Conditions at Tank Cave (Tantanoola) - How's the Spot","Check snorkeling conditions at Tank Cave (Tantanoola), South Australia. Hazardous conditions, water 15.2°C, waves 1.80m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Ftank-cave-tantanoola","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_tank-cave-tantanoola_0_51c738a9692e.jpg",[15,28],{"@context":16,"@type":17,"name":18,"description":19,"url":12,"geo":20,"address":24},"https:\u002F\u002Fschema.org","Place","Tank Cave (Tantanoola)","Tank Cave is a world-class freshwater cave-diving and snorkeling site in the Limestone Coast of South Australia, lying beneath ForestrySA-managed land near Tantanoola. This flooded limestone cave s...",{"@type":21,"latitude":22,"longitude":23},"GeoCoordinates",-37.693833,140.454361,{"@type":25,"addressRegion":26,"addressCountry":27},"PostalAddress","South Australia","Australia",{"@context":16,"@type":29,"name":30,"description":11,"url":12,"breadcrumb":31},"WebPage","Snorkeling Conditions at Tank Cave (Tantanoola)",{"@context":16,"@type":32,"itemListElement":33},"BreadcrumbList",[34,39,42],{"@type":35,"position":36,"name":37,"item":38},"ListItem",1,"Home","https:\u002F\u002Fhowsthespot.com",{"@type":35,"position":40,"name":26,"item":41},2,"https:\u002F\u002Fhowsthespot.com\u002Fexplore?region=south-australia",{"@type":35,"position":43,"name":18,"item":12},3,[45,47,49],{"label":37,"href":46},"\u002F",{"label":26,"href":48},"\u002Fexplore?region=south-australia",{"label":18,"href":50},"\u002Fspots\u002Ftank-cave-tantanoola",{"id":52,"name":18,"slug":53,"latitude":22,"longitude":23,"description":54,"difficulty":55,"image_url":13,"status":56,"tide_constituents":57,"hazard_entries":108,"access_info_structured":138,"area_boundary":127,"routes":127,"created_at":145,"updated_at":146,"today_conditions":147,"today_verdict_view":169,"images":194,"submitted_by":212,"region_name":26,"verification_status":214,"verified_at":127,"disputed":160,"verifier_count":5,"last_verified_display_name":127},"bba4db7e-4585-46ef-909e-79dc07bd6d35","tank-cave-tantanoola","Tank Cave is a world-class freshwater cave-diving and snorkeling site in the Limestone Coast of South Australia, lying beneath ForestrySA-managed land near Tantanoola. This flooded limestone cave system was carved over millennia by rainwater percolating through porous rock, creating crystal-clear underwater chambers, narrow passages, and cathedral-like caverns. Unlike open-water spots, Tank Cave offers an otherworldly experience of submerged stalactites, limestone formations, and near-perfect visibility in a completely enclosed environment. Access is strictly restricted to trained, certified cave divers who are members of the CDAA, with permits required from ForestrySA.","advanced","published",{"name":58,"amplitude":74,"phase":90,"latitude":22,"model":106,"epoch":107},[59,60,61,62,63,64,65,66,67,68,69,70,71,72,73],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[75,76,77,78,79,80,81,82,83,84,85,86,87,88,89],0.003539038496083095,0.00918714331817806,0.17874360455466856,0.042083725642725944,0.13248635179006463,0.002725598954129613,0.005412615802473984,0.004649980202437132,0.005374359604160538,0.13272392461160692,0.055020035379396835,0.03264585201348953,0.009927296036853042,0.14201720619247477,0.009164849106157412,[91,92,93,94,95,96,97,98,99,100,101,102,103,104,105],180.79780467446858,270.4595102379235,251.71955718769755,114.4476491908166,53.46213058180928,116.80981204448416,183.93723009025865,239.10748750166482,229.63652980013512,233.94574933611852,245.80388222916162,223.0339402252514,14.535268863655263,112.97745515913226,108.25621433284925,"EOT20","1992-01-01T00:00:00Z",[109,114,117,121,124,128,131,134],{"name":110,"description":111,"severity":112,"season_start":36,"season_end":113},"Overhead Environment – No Direct Surface Access","Snorkeling and diving occurs entirely inside a submerged cave system with no direct ascent to surface. Entrapment and entanglement risks are extreme.","danger",12,{"name":115,"description":116,"severity":112,"season_start":36,"season_end":113},"Silt-Out \u002F Zero Visibility","Fine sediment on cave floors can be easily stirred up, creating sudden complete loss of visibility, disorientation, and inability to find the exit.",{"name":118,"description":119,"severity":120,"season_start":36,"season_end":113},"Cold Water Temperature","The cave water remains consistently cold (around 12–15°C) year-round, increasing risk of hypothermia without appropriate exposure protection.","warning",{"name":122,"description":123,"severity":112,"season_start":36,"season_end":113},"Restricted Entry – Qualified Divers Only","Access requires CDAA membership and advanced cave certification. Untrained snorkelers cannot enter due to the extreme overhead environment.",{"name":125,"description":126,"severity":112,"season_start":127,"season_end":127},"Overhead cave environment","Sustained overhead environment with limited direct exit to surface, requiring cave-diving certification and training.",null,{"name":129,"description":130,"severity":112,"season_start":127,"season_end":127},"Silt disturbance","Fine silt on cave floors can reduce visibility to zero if stirred up, leading to disorientation.",{"name":132,"description":133,"severity":120,"season_start":127,"season_end":127},"Strong currents at restrictions","Narrow passages can channel water flow, creating unexpected current changes in cave tunnels.",{"name":135,"description":136,"severity":137,"season_start":127,"season_end":127},"Limited daylight hours","Access to the cave is typically restricted to daylight hours and may be weather-dependent.","caution",{"directions":139,"parking":140,"facilities":141,"fees":143,"access_method":144},"Located near Tantanoola, approximately 30 km north-west of Mount Gambier on the Limestone Coast of South Australia. 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