Whittlesey Bombing range

Hi all

Anyone know where this was in Whittlesey ? I found it mentioned in a 50 & 61 Squadron website. A veteran tells that he was bombing at this range when they had to bail out and came down near March. The Pilot stayed with the aircraft and crash landed at Wyton. I’ve heard about a range at Grimsthorpe castle near Bourne but never Whittlesey.

Andy