I have recently been researching the geology of the chalkpit and have come up with this so far:
The disused chalkpit is properly known as Hill Barn Pit (or to geologists as Gasters Pit 2), is an important geological feature on the chalk downs.
The reason for this is because the exposed chalk reveals a deposit layer of what is known as Tarrant chalk. This has provided opportunity for recovery of important fossils. The British Museum of Natural History holds an example of a Bourgueticrinus cf. fritillus, a Crinoid or Sea Lily, a primitive animal which lived on the ocean floor. Also found in scientific studies carried out in the early 1900’s a species of Bryozoa named Pelmatopora lancingensis.