Aug 172016
 
Underwater tank wrestling through Elk River

Our Elk River supply trips are now down to a fine art. Each push trip requires two or three resupply trips – removing the empty tanks from the previous exploration, taking in full tanks, plus caching other gear as required. We are now using a lot of carbon fibres tanks for the longest swim through sump 7. The carbon fibres are much, much lighter than equivalent steel or aluminium tanks and can hold higher pressures. The drawback of the carbon fibre tanks is their buoyancy characteristics in the water.We have placed kilos of lead weights at the diving gear up spot. Each 9L tank takes 6kgs of lead to sink it. We are definitely not carrying this lead backwards and forwards. [read more…]

Jul 272016
 
Overnight exploration in Elk River

We had an interesting weekend in Elk River with the longest trip underground to date. After multiple set up trips to replace empty tanks with full ones we headed in to use them. The trip was complicated by large floods that swept through Buchan two weeks ago. I wasn’t sure what effect the raised water level might have had on the cave, or the gear cached throughout. The first victim of high water levels was the first aid kit, laid out on a beach before sump 4. We found most of the items from the kit floating in the water just before sump 4 and were able to rescue them all. The bag itself had made further progress and was [read more…]

Jun 212016
 
Taking tanks into Elk River again

The weekend before last saw us back in Elk River. After an exciting push trip back in January and a subsequent epic tank extraction trip in March, it was time to start loading freshly tested and filled tanks back into the cave. Going downhill is easier than hauling tanks up to the surface. However the air inside each tank definitely adds weight and as we had a three day weekend on our hands we made good use of it. On both Saturday and Sunday Dave, Sandy and I humped a large tank from the surface to the beginning of sump 5. There had been good rains in Gippsland in the preceding week. I was hoping for slightly higher water levels [read more…]

Jan 192016
 
Elk River Exploration Report

All of that floating around in the pleasant tropical surrounds in Truk Lagoon had to come at a price, and it arrived last weekend with 32 hours of painful caving in Elk River. After multiple set up trips to load in tanks to the beginning of sump 5 last year it came time to use them. The plan was for three divers (myself, Steve and Ryan) to traverse sump 7 and emerge in the freshly discovered Hall of Crazy Horses on the other side. We would take through an emergency pack of camping gear, a rope for lowering gear down the 10m high waterfall, and a selection of 7L tanks for push diving in sump 8. I also intended to [read more…]

Mar 092015
 
Pushing upstream and downstream Elk River

I know I’ve skipped a couple of trips on here, including some nice photos from Scrubby Creek and Shade of Death. However the excitement of the Elk push dives this weekend is going to post first and I will have to get back to the Scrubby Creek shots for you at a later date. The Elk project has been going on for just over two years now and it seems that at times we’ve been making a lot of effort for very little progress. This weekend we put in a lot of effort and got great new cave in return. It was a three day weekend in Victoria so we planned for an easy day Saturday, a downstream push on [read more…]

Dec 022014
 
Elk River push dive

  We were back in Elk River cave on the weekend, once again searching for a way on and through the current final sump. Over the last year or so we’ve laid 250m of line into sump 7 over several push dives. To achieve those dives there have been 15 trips into the cave – to survey, photography, resupply and explore. As the end of the sump got further and further away the dive required larger and larger tanks. This means each push dive trip requires two or three resupply and stocking trips to carry tanks to the end. One of those was just a month ago, where we carried “normal” sized tanks into the cave. Normal-sized for regular side [read more…]