Vince and Roz.
We got caught in a heavy rain shower as we walked up across the field into the wood. Underground it was relatively dry including the “lake”.
At the aven, the effort was concentrated around the ‘wobbly’ rock to the right-side of the aven. There seems to be some air movement emanating from the currently restricted space beyond. It looks interesting enough, let’s see how it develops. 5no. holes, 550mm length x 12mm diameter, drilled and filled. The evenings task was brought to a satisfactory conclusion from the “lake” chamber. All good!
Back on the surface, the heavy rain had ceased, just drizzly rain. Should be plenty to shift on Saturday.