If it is the largest known then that must be a fair incentive to look inside. Techniques for non-destructively investigating a wedge-shaped Long Barrow could be developed by non-destructively investigating an elliptical, or near round, Long Barrow (in Northumberland).

The monument includes a long barrow set below the crest of a gentle north-
east facing slope. It survives as a substantial earthwork orientated north-
west/south-east and is broadly rectangular in plan. The barrow mound is flat
topped. It survives to 106m long, 50m wide and stands to a height of c.8m at
the south-east end and 4m at the north-west end. Flanking ditches, from
which material was quarried during the construction of the monument, run
parallel to the south-west and north-east sides of the mound and survive to
a width of c.5m. These have become infilled over the years but survive as a low earthwork on the north-east side of the mound and as a buried feature to
the south-west. The monument has been partially excavated, both by the Rev.
M Connor in the 19th century and later by Thurnham. No details are known.