Ancient Monuments

History on the Ground

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Two platform buildings on eastern side of Partrishow Hill

A Scheduled Monument in The Vale of Grwyney (Cwm Grwyne), Powys

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Latitude: 51.8892 / 51°53'21"N

Longitude: -3.0547 / 3°3'16"W

OS Eastings: 327512

OS Northings: 221711

OS Grid: SO275217

Mapcode National: GBR F4.R0X9

Mapcode Global: VH78T.0SG2

Entry Name: Two platform buildings on eastern side of Partrishow Hill

Scheduled Date: 21 March 2011

Source: Cadw

Source ID: 4372

Cadw Legacy ID: BR416

Schedule Class: Agriculture and Subsistence

Category: Platform House

Period: Medieval

County: Powys

Community: The Vale of Grwyney (Cwm Grwyne)

Traditional County: Brecknockshire


The monument comprises a pair of clearly marked and well preserved building platforms (Items A and B), 25m apart and probably of medieval date, cut into a steep SE facing slope on the eastern flank of Partrishow Hill at 382m OD. They lie just outside the present field system and are separated by a hollow, possibly indicating an original approach from below. The terrain dictates that both platforms have deeply cut uphill hoods and substantial downhill terraces. Of the two, The southern platform (Item B) exhibits clear traces of stone walling in contrast to the northern platform (Item A). Elements of other indistinct and possibly related platforms and a relict field system are traceable further to the south and east.

The monument is of national importance for its potential to enhance our knowledge of medieval upland agrarian exploitation in south-east Wales. The building platforms are well preserved examples of their class and their differing construction may also inrease our knowledge of medieval vernacular strcutures and domestic practices. As a pair they may indicate a more permanent or long-lived settlement, especially when considered in conjunction with other traces of activity on these slopes.

Source: Cadw

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