Forest managers want sheep to help clear the way to an ancient stone circle.

The animals are needed to graze a seasonal let in Allean Forest just north of Loch Tummel to help keep the four-post Na Clachan Aoraidh stone circle clear of vegetation.

Forest Enterprise Scotland (FES) wants farmers to provide sheep for the project around the scheduled monument in Perthshire.

Graeme Findlay, for the FES team in Tay district, said: "We're offering a 17.41 hectare seasonal grazing, suitable for around 30 to 35 sheep, for a period of two months during September and October, and we might consider a further one month in the spring.

"As well as keeping the stone circle clear of vegetation, the grazing should help us to expand the rare and specialised plant communities that grow where limestone outcrops can be found by reducing the competition from other vegetation.

"It's a limestone area and we are looking to get the sheep to keep the mix of grasslands on the site in the right balance, reducing the more acidic grassland plants to give more space for calcareous grassland species."

The site is stock-fenced and has water on site but might need additional water in very dry weather periods.

For further details contact the FES Tay District Office, Dunkeld on 0300 067 6380.