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Suspended in dancing beams of light within this collap...",{"@type":21,"latitude":22,"longitude":23},"GeoCoordinates",-37.892403,140.676162,{"@type":25,"addressRegion":26,"addressCountry":27},"PostalAddress","Victoria","Australia",{"@context":16,"@type":29,"name":30,"description":11,"url":12,"breadcrumb":31},"WebPage","Snorkeling Conditions at Kilsby's Sinkhole",{"@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=victoria",{"@type":35,"position":43,"name":18,"item":12},3,[45,47,49],{"label":37,"href":46},"\u002F",{"label":26,"href":48},"\u002Fexplore?region=victoria",{"label":18,"href":50},"\u002Fspots\u002Fkilsby-s-sinkhole",{"id":52,"name":18,"slug":53,"latitude":22,"longitude":23,"description":54,"difficulty":55,"image_url":56,"status":57,"tide_constituents":58,"hazard_entries":109,"access_info_structured":131,"area_boundary":56,"routes":56,"created_at":139,"updated_at":140,"today_conditions":141,"today_verdict_view":163,"images":189,"submitted_by":190,"region_name":26,"verification_status":192,"verified_at":56,"disputed":154,"verifier_count":5,"last_verified_display_name":56},"ad771432-afd6-4533-8613-db65198cc8e7","kilsby-s-sinkhole","A breathtaking ancient freshwater sinkhole on private farmland, Kilsby's Sinkhole offers gin-clear waters with visibility exceeding 60 metres. Suspended in dancing beams of light within this collapsed limestone cavern, snorkellers float above submerged rock formations and fossilised tree branches in a cathedral-like chamber. The 2-hour guided snorkel tour (all gear supplied) leads you through the ethereal, spring-fed pool surrounded by lush vegetation. Just 14 km south of Mount Gambier on South Australia's Limestone Coast, this is one of Australia's most extraordinary inland snorkelling experiences.","beginner",null,"published",{"name":59,"amplitude":75,"phase":91,"latitude":22,"model":107,"epoch":108},[60,61,62,63,64,65,66,67,68,69,70,71,72,73,74],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[76,77,78,79,80,81,82,83,84,85,86,87,88,89,90],0.0036449149981681184,0.009420108827505155,0.17766702636409787,0.03990487231839671,0.1314557343450511,0.00344434199033792,0.0054116540642942705,0.0038286068610277704,0.005546553069122516,0.13177045441585253,0.054310633555899254,0.032995961377520665,0.009366653043160738,0.13876419534909695,0.010008424187882312,[92,93,94,95,96,97,98,99,100,101,102,103,104,105,106],194.25990304732085,276.34672485963017,252.57602190224782,113.37590808347994,52.17881306796207,115.83606546982811,170.6645088356328,240.5962950746499,249.51745476903045,235.27828343350433,248.49987774712963,224.26740301574895,12.855032898414436,113.10366076383065,105.19213018130506,"EOT20","1992-01-01T00:00:00Z",[110,114,118,121,125,128],{"name":111,"description":112,"severity":113,"season_start":56,"season_end":56},"Bee activity","Bee activity increases around the sinkhole during warmer months (spring and summer).","caution",{"name":115,"description":116,"severity":117,"season_start":56,"season_end":56},"Deep drop-offs","The sinkhole is deep (up to 30 m) with steep drop-offs beyond the snorkelling zone — stay within the designated guided area.","warning",{"name":119,"description":120,"severity":113,"season_start":56,"season_end":56},"Farm traffic","The sinkhole sits on active farmland, so drive carefully on access roads and mind livestock.",{"name":122,"description":123,"severity":113,"season_start":36,"season_end":124},"Cold freshwater","The water in the sinkhole remains cool year-round; wetsuits are provided on guided tours but unprepared swimmers may experience cold shock.",12,{"name":126,"description":127,"severity":113,"season_start":56,"season_end":56},"Limited entry\u002Fexit points","Access is via a single wooden stairway; exit is controlled and may feel confined for nervous swimmers.",{"name":129,"description":130,"severity":113,"season_start":56,"season_end":56},"Private property access","The sinkhole is on private farmland; access is by booking only and unauthorised entry is not permitted.",{"directions":132,"parking":133,"facilities":134,"fees":137,"access_method":138},"14 km south of Mount Gambier, via Riddoch Highway (A66) then Sisters Road. The sinkhole is located on private property at 525 Sisters Rd, Moorak, SA.","On-site parking available on the private property.",[135,136],"parking","toilets","Snorkel tour (2 hours): $99 per person (gear included). 1-hour sinkhole tour from $15.","snorkel_tour","2026-07-27T02:57:25.860534Z","2026-08-04T05:36:16.070339Z",{"verdict":142,"evaluated_at":143,"models":144},"no_go","2026-10-03T02:21:42.210920Z",[145,152,158],{"model_name":146,"is_favourable":147,"value":148,"threshold":149,"unit":150,"operator":151},"Wind Speed",true,7.4,10,"kn","lte",{"model_name":153,"is_favourable":154,"value":155,"threshold":156,"unit":157,"operator":151},"Wave Height",false,1.92,0.5,"m",{"model_name":159,"is_favourable":154,"value":160,"threshold":40,"unit":161,"operator":162},"Visibility",0.99,"","gte",{"verdict":142,"rating":164,"evaluated_at":143,"generated_at":143,"source":165,"confidence":166,"visibility":169,"parameters":170,"models_passed":40,"models_total":184},"Hazardous","precomputed",{"level":167,"value":168},"High",100,{"score":160,"rating":56,"confidence":56},[171,172,177,180,186],{"name":153,"value":155,"label":56,"unit":157,"favourable":154,"score":5,"optimal_max":156,"marginal_max":36},{"name":173,"value":174,"label":56,"unit":175,"favourable":154,"score":36,"optimal_max":176,"marginal_max":124},"Swell Period",10.4,"s",8,{"name":146,"value":178,"label":56,"unit":150,"favourable":147,"score":43,"optimal_max":149,"marginal_max":179},7.3963112,15,{"name":181,"value":182,"label":56,"unit":183,"favourable":154,"score":36,"optimal_max":184,"marginal_max":185},"Precipitation",18.8,"mm",5,20,{"name":187,"value":56,"label":188,"unit":161,"favourable":147,"score":43,"optimal_max":56,"marginal_max":56},"Tidal Phase","slack",[],{"display_name":191},"Daniel","unverified",1791009164986]