Ed Ford and Stuart Jelliss. EF arrived a bit later than expected due to temporary traffic lights. SJ had just arrived, also later than expected. After unlocking the entrance we headed straight to Tea Party Chamber with two Darren Drums of sand (there's about half a Daren Drum's worth left in lockbox). We took a look at the scaffolding work, then headed to Mad Hatters Hall where we both took a dig, SJ to the left and EF to the right. SJ confirmed that the roof and floor meet with no obvious draught or way on. EF focused on the small trench at the end of the calcite sheet working left towards the middle of the wall. This was found to start widening and on closer inspection it looks like the sheet used to sit higher on the wall. Started excavating this gap and started finding sand rather than clay. The wall also starts undercutting at this point. There is a draught but this could be the hole which connects above. There was a steady drip of water coming in above the formation with no sign of it running in to either dig either side. Hammer drills to break calcite will be required next time.
We were both out by 20.45. EF headed to the Hunters'. Ed.
