Madness said:
At the top of this is a flat passage heading off somewhere. It's been dug/is being dug by someone.
Yup - Some of us Orpheus lot had a (quick) look at that particular dig (myself included) some time ago, probably early in 2017. We removed some of the floor and managed to push forward a couple of meters, to a point we could get a better view of what lied ahead, but the consensus was that it didn't look to inspiring. We meant to go back and push it a further, but got distracted with other things.
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The flooded Shaft below the eye-hole is has also received some attention by Orpheus over the last few years, on and off, as it depends upon the water levels. I've not been involved with this particular project, but if I recall correctly, it does drain away, and I'm pretty sure the depth has been extended a little. I'm fairly certain the digger(s) do periodically check the water levels with a view to continue digging. I'm think they've had the odd poke around elsewhere in Raven too.
Anyway, if anyone is interested, pm me, I can put you in touch with someone who can give you more info.