No.1 (TL226532) - chalkwell (shaft 9 metres) explored in 1975 but now filled
No.2 (TL219533) - chalkwell (shaft 4 metres) explored in 1950s but now filled
No.3 (TR227532) - filled chalkwell
References
"Deneholes", Chelsea Speleological Society, page 10
"Deneholes Part 2", Chelsea Speleological Society, page 8