Crater

I've mentioned before the Ashley Ranges in the north of the forest, the area is pock marked by craters of varying sizes, from a meter or two in diameter to 7 or 8m.  On the heathland plain of Leaden Hall are two particularly large craters.  Leaden Hall was a massive bomb testing target known as,  No. 2 Wall Target, a target wall stood off centre in a circular area and was used to test bombs; all that remains today of the huge reinforced concrete structure is grassed area in the definable shape of the concrete apron which was removed in 1991.  The military still use the area today;  helicopters, Apache and Lynx,  often train abouts, coming down low, hugging the contours of the land.