Correct! Over to you. Chris.

No. Good guess though. Chris.

Never been myself. Let me see if I can find a photo... Chris.

Aygill Caverns? Chris.

Preserving access to the drainage level in an unnamed mine in an unnamed location! Chris.

Porth yr ogof. Chris

The survey is a work of epic proportions, let alone the exploration! Well done to all those involved. Chris.

I suspect they've solved the communication issue, rather than the issue of making a caving robot. Chris.

Nice! It wasn't clear if any random tourist could have a go though. Chris

Two comments: 1. You might be able to make a convenient backlight with something like this: https://thepihut.com/products/white-led-backlight-module-medium-23mm-x-75mm 2. The image looks as if the 'phone has done a fair bit of 'digital helping'. A sort of smudge effect. I've seen it before on...

Mrs. C. made me get rid of the cement mixer! Into the washing machine they go. Chris.

What, complete bollocks? Chris.

Nice one Robin - downloaded for future reference! Chris.

The cost includes quite a few hundred hours at £50 (or more) per hour for a skilled engineer to create the product in the first place. This has to be amortised across the low number of units that will get sold. The manufacturing cost is a small portion of the sale price! Chris.

We always use screwgates. I have seen karabiners rotated where people have passed them (e.g. a rebelay) whilst ascending and not noticed. I have found myself ascending on the gate of a karabiner more than once. I've also seen karabiners with the gates pushing against the rock just below the...

What a fantastic website! Bookmarked. Chris.

There is an irony in them being so polluting, but being loved by the more eco-conscious members of society. Chris.

Unfortunately the Greenside trip will only run once as the Meet Leader is giving a lecture on the other day. Note that it's not the classic Greenside Through Trip - that is out of bounds these days. My suggestion is to do some networking during the Friday and Saturday social events. For...