The iconic ancient site of Grianan Ailiagh at Burt will be lit up tomorrow night, Saturday May 5.
It is designed to celebrate the historial links between An Grianan, Ailiagh and Tulach Og, Co Tyrone and the Cineal Eoghain Clans.
The visual spectacular will be visible from many part of Derry from 9pm.
Those behind the event say it offers a "wonderful opportunity" to view and capture the site from afar.
At 8.30pm, there will be a parade to the fort from the carpark, with a stunning carnival performance, followed by Inishowen Traditional Musicians.
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