Earsdon, spoil heaps

20th century spoil heaps associated with Earsdon Colliery. A pale tone circular cropmark with a small central mark is visible on air photos at NZ3136 7243. It measures approximately 21m in diameter. This feature show on no other air photos and it is not certain that it is of archaeological origin. The area of this feature appears to have been used as a holding area for spoil from nearby collierys in 1958 and later and was subsequently relandscaped, which must cast some doubt on the archaeological potential of these cropmarks.