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During a visit to Perachora in April 1975 a new fragment of the runnel or water channel running from the top of the deep shafts to the storage chambers was observed. It consists of a fragmentary block of the local hard limestone, with a partly preserved water-proof lining. It had evidently been ploughed up from the field immediately to the north of the easternmost deep shaft. The total original width of the block was 0·32 m. The original length is not preserved. It has now been taken to the Perachora museum.
R. A. Tomlinson (Mon,) studied this question.