In situ hearths are relatively rare at Red Hill sites. Parts of hearth substructures were found at the Red Hills on Osea Road near Maldon and at Tollesbury in Essex, whilst the first identifiable hearth was found at Peldon close to the central settling tank in a group of three. This consisted of a subrectangular 1.8m x 0.8m clay walled structure, surviving to 0.4m high, with evidence of multiple firings. Other hearths containing Roman tile have been found at Leigh Beck on Canvey Island, and others have been located at Red Hills along Fenn Creek near South Woodham Ferrers.