Silbury Hill 180
Image by Snap

Until they start tunneling no one knows for sure what is going on inside.
Its all guess work based on flawed scans from Skanska and some low quality video footage from the bore holes taken 2 years ago.
I can't wait for for the tunneling to start.

Give this man a shovel!!! ;-)

I think it should be really fascinating, and the pressure ought to be on EH to get the tunnelling right this time.