from the B730 joins the A71 at a roundabout at Corsehill, providing expressway access from Dreghorn to Irvine town centre, and eastwards to Kilmarnock. History Dreghorn was the site of a significant neolithic settlement, and subsequently a medieval village: archaeological evidence has been provisionally dated to around 3500 BC, suggesting that Dreghorn could be Britain's oldest continuously inhabited village. In advance of a development of new housing to the north of properties on the current Main Street, preliminary testing found features including an ancient well. The excavations were carried out between November 2003 and April 2004 at a site on the slope from the ridge down towards Annick Water. The housing development has since been completed, as Station Brae Gardens. Neolithic features included pits and post holes with remains including fragments of some Early Neolithic carinated bowls and larger amounts of Late Neolithic Grooved ware. Stone items were made from local and imported materials including flint, Arran pitchstone and chert, and included scrapers, arrowheads and cutting tools. Three parallel rows of post holes indicated a rectangular structure measuring , probably a timber hall similar to the Neolithic long house found at Balbridie. Smaller post holes and stake holes define eight to twelve round or oval structures, possibly round houses, as well as six gully-defined structures with numerous stake-holes. A large oval feature, measuring approximately , contained heavily retired pottery shards and is thought likely to have been a kiln. Possible ritualistic landscape features include a massive post-pit and post holes or pits forming arcs. At the west edge of the site, adjacent to Station Brae, part of a probable palisade was found. Medieval finds included a trackway, ditches, pits and remains of numerous structures including kilns and a wattle and daub walled granary. John Boyd Dunlop was born at a Dreghorn farm on 5 February 1840. He qualified as a veterinary surgeon at the Dick Vet in Edinburgh and set up practice in Belfast, where he also invented a pneumatic tyres for bicycles in October 1887. The principle had been patented by Robert William Thomson in 1847, but it was Dunlop's invention that made a success of the idea. Maid Morville's mound Maid Morville's mound was located to the east of the B730, just north of Holmsford Bridge before it crosses the River Irvine. The name commemorated the tragic drowning of a member of the de Morville family, who were