A fluxgate gradiometer survey undertaken on land at former Thoresby Colliery in Nottinghamshire has recorded a small number of linear anomalies that might indicate buried ditches. For the most part these were detected in the western part of the survey area. Linear trends in the mid-eastern part of the site are possibly of natural, rather than archaeological, origin. Whereas the majority of magnetically weak anomalies almost certainly reflect natural features, an archaeological origin of some (albeit unspecified) discrete anomalies as pits cannot be discounted. Examples recorded in the western part of the site are considered more likely to be associated with anthropogenic activities, though the majority might be associated with the former colliery. Slight traces of probable potential ridge and furrow were recorded in the mid south-western region. Widespread and magnetically stronger variation in the north-western part of the site indicates probable land fill. Stronger variation was also induced by buried services and modern boundaries.