This geocache is part of a series of 3 caches around the common, with the last one being on a tractor, hence the gears reference.
Biggleswade Common is an area of grassland that extends northwards along the eastern bank of the River Ivel from the Shortmead Street bridge. It continues clockwise, crossing Potton Road at the town's eastern boundary to a section known locally as the Pastures. Its 300 acres (120 ha) make it the largest area of common land in Bedfordshire. It has loamy and sandy soils with naturally high groundwater and a peaty surface. It is run by an association of rights owners called the Fen Reeves of Biggleswade Common, as a working common grazed by horses and cattle.