Where was Shrooms filmed?

2007 film by Paddy Breathnach

Shrooms (2007) was filmed in Armagh, Monaghan and Rossmore Forest Park, 3 places named in its Wikipedia article, in Ireland, the United Kingdom. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.

See them on the map → Wikipedia Source data

Places per Wikipedia's article

The Wikipedia article names 3 places. Each links to the sentence that says so.