May 202013
 

Sump 1 in Elk River

About the trip

Although I didn’t take very many photos on our last weekend trip into Elk River, I wanted to share a couple more of them with you. Last week I talked about getting shots of Sandy coming through sumps 2 and 3 and the difficulty of staying ahead of the silt to get a shot through clear water. On the same trip I was also keen to get a shot in the first downstream sump. Jim Arundale was the first person to pass sump 1. Over a number of attempts he pushed his way through the short underwater distance to the other side. The most pertinent feature of the first sump isn’t the length though, it’s the height. The fact that I can fit the camera housing through means that the sump is at least 28cm high – but I’d be very surprised if it was much more than that.

About the dive

The dive through sump 1 can therefore be a bit exciting. After a crouching, crawling and roof sniffing journey from the gearing up spot down the stream, there’s a nice pool to stand in and put your tanks back on. Once prepared you kneel in the water, grab the line firmly in one hand, and wedge yourself into the flattener. Forward progress comes from wriggling on your belly and pushing with your toes against the roof and floor. The rock feels like flowstone and the ridges you can see there have a nasty tendency to grab at gear and hold you back.

Sump 1 self portrait

Being a streamway, it’s also as silty as you would expect. If we haven’t spent too long standing in the mud and gearing up the first person through may see something, but the ones after that definitely don’t. This sump is a difficult dive, and getting the housed camera through can be interesting. So getting the camera in the right position to take some photos while in there, and have them show anything at all, sounded like a challenge. I have seen a photo from sump one taken looking forward into the clear water in front of the diver. What I really wanted to take though was a photo with a diver in it. Given the impossibility of sending two divers through together, or having any clear water between them, the only option left was self-portrait.

About the photo

The photo above is one of two that had clear water in them. As I was holding the camera at arm’s length in front of me I could see that it was in clear water…through the silt that was in front of my face. I would inch forward against the rock, and the silt moved with me for the same net result. I discovered that I needed to have my head down and sideways to fit through, which didn’t help with getting a face in the picture or with seeing where the camera was up to. I used both hands to push the camera forward on its base while also running the line and working the shutter release with my left hand. In this shot I’ve paused for a moment and you can see my right hand moving back to unhook one of my tank valves from the cave.

The second shot was taken just as the sump starts to open up –  that’s the surface shimmering above me and there’s finally enough room to look up. With sump 1 behind me, the rest of the cave beckons.

May 132013
 
High speed underwater photography in Elk River

About the site We were back in Elk River streamway this weekend, hoping to survey, tidy up some line and have another look at the end. Elk River currently consists of 6 downstream sumps that we have passed, and a seventh sump that surfaces twice in air bells and continues underwater. It’s over 1.5kms of hard caving to the known end. There are lots of interesting bits – crawling over gravel dragging tanks, sinking in deep mud, squeezing through vertical rift passages and lowering gear through breakdown piles. My favourite bit of the second trip was my push dive at the end into the sixth sump. Unlike the muddy soup [read more...]

May 062013
 
Two years on the web

I paid an unexpected bill for web hosting this week, and realised that this post marks the second anniversary for this website. Given I was afraid to start until I had ten pre-written articles for fear I’d spend a lot of time setting up a site and then not be able to create enough content, I’ve come a long way! This post is my 118th article, each with a couple of photos and some thoughts on how they were taken. If anything my diving has become more regular and it’s rare that I’m not in the water at least once a week. Most Mondays I’m therefore well placed to write [read more...]

Apr 292013
 
Underwater junk in sinkholes

About the cave These two photos were taken in a small sinkhole south of Mt Gambier. I dropped down on a rope from the paddock above, stopping half way down to survey the entrance lake covered in floating bottles and other debris. Directly under the entrance is a huge cone of stuff…a lot of old fencing wire, bottles and tins, 44 gallon drums and other unidentifiables. The water around all of this was crystal clear, so the challenge was working out how to get dive gear on and get in without spiking myself or my drysuit on anything sharp. About the dive Having navigated my way off the pile and [read more...]

Apr 222013
 
Shadow aliens in Weebubbie Cave

About the dive With the back end of the main Weebubbie tunnel down at 40m, and the roof of the railway tunnel around 20m, long dives to the end mean a lot of deco back under the lake. After 90 minutes of photography, swimming and scootering in the depths Stefan and I had 60 minutes to kill up in the shallows. Rather than scissors, paper, rock competitions as the minutes crawled by, we decided it was time for some photographic experimentation. One of the joys of cave diving is swimming through darkness and watching the walls light up with wandering dive light beams. If you lead the dive, you might [read more...]

Apr 152013
 
Elk River past sump 4

About the cave By the looks of things, Elk River is going to be taking up a lot of my time this year. Elk (aka the Murrindal Potholes Eastern Master Cave) is the streamway system underlying the Buchan Potholes Reserve. The streamway was first discovered in 2006 by the VCLT and the sump first passed by Jim Arundale, later joined in exploration by Agnes Milowka. This weekend just gone the cave has been extended to nearly 1.7kms with a fantastic dive through sump 7 and beyond by Steve Fordyce to add 115m of line, assisted by Ken Murrey. As the end gets further and further from home, the effort required to [read more...]