Radon tests to be carried out at 34 Highland Council schools
Highland Council is to have 34 of its schools tested for naturally-occurring radon gas.
The sites include Milton of Leys, Gergask, Carrbridge, Raasay and Kingussie primaries and Lochaber and Golspie secondary schools.
The local authority said they were being tested as part of a wider programme of tests.
It said the schools were considered to have a "low probability" of having radon gas present.
Since the start of this year, Highland Council has been investigating the presence of the gas at its schools and other buildings.
The other schools involved in the latest phase of testing include Farr Primary and Secondary in Sutherland, Farr Primary near Inverness. Kingussie High, Grantown Grammar, Black Isle Education Centre and Strontian Community Complex and Primary.
Monitoring equipment will also be installed in the following primaries: Durness, Mount Pleasant, Crossroads, Lybster, Reay, Bower, Avoch, Culbokie, Banavie, Lochyside RC, Balnain, Kirkhill, Daviot, Abernethy, Kingussie, Grantown, Newtonmore, Glencoe, Inverlochy, St Brides and Ardgour.
In August, Highland Council said that about 1,150 council houses would be tested for radon gas.