Basement on the Inishowen peninsula

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Basement on the Inishowen Peninsula in County Donegal are mostly the rock-cut variant (cut into the rock) among the types of basement in Ireland , which is common in the north of the island . In the case of basements , a distinction is made between “earth-cut”, “rock-cut”, “mixed”, “stone built” and “wooden” (e.g. Coolcran, County Fermanagh ). The time of construction and use of basements begins in the early Iron Age .

The excavation of the basement at Burnfoot reveals the construction of the underground passages and chambers. Here a round hole 3.65 m in diameter and 1.85 m deep was sunk into the marl bedrock . The side walls were lined with stones that formed a cantilever vault upwards . The vault was finally closed with a plate. This basement is unique because there is no further access. The systems are usually accessed through a narrow, tile-covered corridor, which tapers to a slip after about a meter by pulling the ceiling downwards. The passage widens behind the slip and, after further slippage, forms several axially, laterally or angled passages or chambers.

  • Carrownamaddy , near Burt Church, is shaped like a beehive hut .
  • The chambers of the hillside basement of Rooskey, near Clonmany, are rectangular in shape. They are connected by slips that run horizontally and then vertically so that the subsequent corridors or chambers are each at a higher level.

In Ireland, basements are often found in Raths , but they do not exist on Inishowen ( Stroove Souterrain ). Sometimes they come in closer groups ( Ballywee ). There are more than a dozen in the Burt district. Four were discovered on Inch Island in Lough Swilly inlet . A detailed description of a “cave at the base of Grianan ” investigated in 1838 appeared in Mactochair's book “Inishowen”, but its traces have disappeared. Additional basements were found in the Whitecastle and Moville counties. Some are in Baskill and Glasalt near Culdaff.

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