Yes you did indeed get to the east Kennet barrow.
Farmer is usualy alright as long as you ask permission first.
There are plans to open it in the furute, not sure when tho'. The foot & Mouth last year put back a lot of scheduled digs.
There is a dig starting at Beckhampton in the next few weeks.
Then one at the avenue and Falkners circle followed by a summer dig near the Sanctuary.
PeteG