Grid reference: SP683249

A reclaimed brick pit and rubbish tip 6.5 miles east of Bicester. The scrubby area around the lake contains a large variety of flowering plants, which support a range of butterflies. Leave Bicester on the A41(T) towards Aylesbury, turn left and go north through Edgcott. Go over the crossroads between Charndon and Calvert and park in the small car park on the right opposite Greatmoor Sailing club, or on the opposite side of the road to the reserve. Access to the eastern side of the reserve from Werner Terrace is no longer possible thanks to HS2.