The 'New' A2 had been considered for a long time in replacing the old A2 -built c1921-1923. Large trenches and bore holes were sunk on the heath many years before construction of the New A2 to see what lay beneath. The New A2 dissected further the expanse of natural heathland and, in so may ways, destroyed the essence of the heath for ever.
Below images kindly supplied by Nigel Goldup and centre on the area of the footbridge at the end of 'The Dell'
Below - from footbridge location looking towards Bexley - area of the valley of 'The Dell' to the left.
Below - from footbridge location looking towards Bexley / Crayford / old A2 direction.
Below - from location of footbridge looking towards the area of the old A2 / Crayford.
Below two images from Rhona Lee - Leyton Cross.
Below - somewhere on the heath - the new A2 under construction. 1969. ©️ Dartford Library and taken from Facebook Dartford Remembered. Probably Leyton Cross with the Old Bexley Lane to the immediate left in the direction of the old Bexley Hospital. The old army camp and sandpits to the right.