Latitude -35.72542, Longitude 148.490782
Located in the Snowy Mountains Region of NSW, nearest town Tumut.
Source: Office of Environment & Heritage, National Parks and Wildlife service, Guide to New South Wales Karst and Caves.Link To Yarrangobilly Thermal Pool
The Yarrangobilly Caves are significant to the local Aboriginal people and the presence of large numbers of stone flakes and stone tools close to the caves is indicative of early Aboriginal occupation. Aboriginal bones were also removed from the caves by early European visitors.
The limestone at Yarrangobilly is of Late Silurian age and formed approximately 440 million years ago. The limestone occurs in a belt that is approximately 14 kilometres long and 1.5km wide and is overlain by slates, shales, sandstone and conglomerates of the Ravine Beds.
The Yarrangobilly karst contains an outstanding collection of features, including gorges, arches, blind valleys, springs, pinnacle fields and over 250 caves. Six of its caves have been developed and are open for public viewing, including South Glory, North Glory, Jersey, Jillabenan, Harrie Wood and Castle.
Many of Yarrangobilly's caves are well-decorated. Several caves contain sections of rockfall and rock fills thought to be related to ice-wedging associated with previous ice ages. In Jersey Cave, thick flowstone sequences span half a million years and provide the longest continuous fire history record from a single site in Australia.
Significant sub-fossil deposits have been found in caves at Yarrangobilly. These include the remains of the vulnerable broad-toothed rat (Mastacomys fuscus), endangered smokey mouse (Pseudomys fumeus) and long footed potoroo (Potorous longipes), and the extinct thylacine (Thylacinus cynocephalus).
A well loved feature of Yarrangobilly Caves is the thermal pool. Water seeps through porous rock to a depth of approximately 760 metres where it is heated and then forced up through cracks to emerge as a warm spring. The spring discharges at approximately 100,000 litres per hour and at a constant temperature of 27 degrees centigrade. A bathing pool was first constructed at the thermal spring in the late 1890s and the present pool is 20m long and up to 2.5m deep.
Yarrangobilly Caves are within the Kosciusko National Park, which is located on the NSW Southern Tablelands approximately 77 km south-east of Tumut and 110 km north-west of Cooma. Access to Yarrangobilly Caves is via a 6km long unsealed one way ring-road which leads off the Snowy Mountains Highway approximately 45km south east of Talbingo. Look for the signpost on the highway. Snow chains required after snow falls.
Entry fees apply. For more information link to www.environment.nsw.gov.au/NationalParks/parkHome.aspx?id=N0018