I'm so sorry that you had such an awful experience, Pegasus! I don't know why it was a different experience for me, but I feel incredibly lucky with the opportunities that volunteering for the BCA gave me. I learnt so much about web development, system administration, cloud services etc...

I only say this because I don't like the chilling effect that the fear of being sued has. The law isn't out to get you, it's there to ensure that you are held to account if you behave irresponsibly. I lead trips, and I therefore accept that I am adopting a level of responsibility for the...

Wouldn't you have to have acted negligently to be sued and for the BCA brokered insurance to pay out?

Had a bit of an overhaul of the admin access to fix some errors a while ago, may have forgotten to add you back JoshW, sorry about that. Will FB you.

This is the best phone search tool available, plug your requirements in and see what you can find: https://m.gsmarena.com/search.php3 Here's a decent start - physical keyboard looks to be a challenge...

I believe there are a lot of webmasters who need help bringing their websites into the modern era. Email it@british-caving.org.uk and I'm sure Simon will be able to point you in the direction of some BCA IT projects desperately in need of attention.

I have an inconveniently large head, and the Petzl Vertex Vent works well for me as long as I don't let my hair grow out...

I certainly agree with this bit, scrap it all together and increase income tax to account for the revenue.

I didn't see much sign of the cave water depth responding to rainfall after about 48 hours in the dataset that I was looking at, but it was very limited, so some things just might not have happened over that period (e.g. big snow melts, unusual hydrological phenomena). The question is, I...

There are a couple of met office MIDAS weather stations nearby that allow you to guesstimate whether that could be an issue. It wasn't over the period of BHs data: I would be surprised if the melting of surface snow by rain had a <12 hour response time, but it would certainly could melt...

@IanWalker with a lot of caveats, yes. The problem with this analysis is that, of course, it's correlational not causational. Rain doesn't tend to fall over a single grid-cell, and removing the conflating rainfall from adjacent grid cells requires an awful lot of rainfall and flow data.

Another interesting point is that if you take the rainfall over individual grid-cells and work out the correlation with the cave water depth for each one you can map this correlation in space. You get four distinct clusters - areas on the map where if rain falls it impacts the cave water depth...

Just had a hunt through my old files - here's a nice clear rainfall event and cave water depth response from BH's data. Ignore the flood level line, that's a ridiculously conservative estimate! From rising limb of hyetograph to rising limb of hydrograph is about 12 hours, but this was with...

Brendan Hall has some water level data from Sleets Gill that I tried to use to model the response of the cave water depth to rainfall. There wasn't quite enough data to draw any useful conclusions, but based on that small sample I was able to predict with a high precision whether the cave will...