Ancient Monuments

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Elan-Rossdhu, crannog 250m WSW of Rossdhu House

A Scheduled Monument in Lomond North, Argyll and Bute

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Latitude: 56.0691 / 56°4'8"N

Longitude: -4.6368 / 4°38'12"W

OS Eastings: 235954

OS Northings: 689382

OS Grid: NS359893

Mapcode National: GBR 0J.PN91

Mapcode Global: WH2LS.RQ57

Entry Name: Elan-Rossdhu, crannog 250m WSW of Rossdhu House

Scheduled Date: 16 October 1998

Source: Historic Environment Scotland

Source ID: SM7772

Schedule Class: Cultural

Category: Secular: crannog (with post-prehistoric use)

Location: Luss

County: Argyll and Bute

Electoral Ward: Lomond North

Traditional County: Dunbartonshire


This monument comprises an artificial island, or crannog, in Loch Lomond. The island is roughly circular with a diameter of 30m (when the Loch Level is at its usual 7.5m above Ordnance Datum). There is a large quantity of tumbled masonry on the island which may be the remains of the predecessor to Rossdhu Castle.

The area to be scheduled includes the island and an area of the loch bed surrounding it which contains submerged remains which may include evidence of the island's construction and use. The area is a circle 60m in diameter centred on the island itself and is marked in red on the accompanying map extract.

Source: Historic Environment Scotland

Statement of Scheduling

This monument is of national importance as a crannog, possibly of Iron Age construction date, with medieval remains visible. It is a well-preserved example of a medieval defensive island site and has great archaeological potential to shed light on the crannog's construction and lengthy period of use.

Source: Historic Environment Scotland



RCAHMS records the monument as NS 38 NE 3.


FIRAT (1996) 'Loch Lomond Islands (Arrochar; Luss parishes), survey', Discovery Excav Scot, 15.

Fraser, Sir W. (1869) 'The chiefs of Colquhoun and their country, Vol. 2, 143, Edinburgh.

Source: Historic Environment Scotland

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