Not all caving involves having lots of fun and exploring new places and seeing beautiful formations. Sometimes it's projects. In this case placing a gate at the behest of the land-owners who are nervous about liability issues. They called upon my grotto/group to help out and we did. Rawther nicely too I might say.
For this particular project the gate was placed some 10 feet down inside the entrance (see pics below). Mainly so that disrespectful idjits with their 4X4 trucks and winches can't get a good purchase on it and yank it right off/out.
The whole project took two days to complete. It was done discreetly and when another nearby cave gets it's gate placed on it then it'll be announced in the media and hopefully the public will accept this alternative to permanently closing the cave(s) which the land owners wanted to do in the first place. Thankfully my group managed to intervene with the alternative so that future generations can still enjoy these natural resources while they are being protected and protect the public.
I still havent' figured out how to post pics and have captions underneath to help better explain what's going on. Since only 5 are allowed at a time it'll have to do. Enjoy.
1. Preprations include drilling holes for inch thick rebar to be inserted and be the base to which the steel plates are welded to.
2. Cutting the Steel ... not as easy as it looks as it's 3/4 inch thick. (That's me on the saw)
3. The steel is lowered down while the guy is trying to rappel at the same time. Clumsy but safe enough that it works.
4. Parts being welded while inside the cave. Thankfully the cave was "blowing-out" and all the fumes were carried upon the wind outside.
5. The completed gate (with door opened). Note the bat welded on the left side. The bars on the gate are designed to keep people out... but should any bats wish to roost they can fly between the bars. But in-so-far this cave hasn't a history of bats roosting so that's not a big deal. But since it does blow copious amounts of air (barometric pressure) a solid door wouldn't be a good idea.
Since the cave itself is vertical in nature (sloping 75 to 80 degrees) a rope is needed. As the door is opened the rope will go down and immediately to the left (of the picture #5). This will make it easier for people to get out.
If I'm lucky I'll be notified of the other cave gating and be able to take pics of that and post 'em here.