A moon ring was spotted in the Scottish Highlands this week.
The halo, which is created by suspended ice crystals in the air, was seen over Tyndrum and captured on camera.
In folklore, moon rings are said to warn of approaching storms.
Experts at Cornell University in New York say: "Halos always occur exactly 22 degrees away from the moon. Occasionally, intense halos can be double halos, just as intense rainbows can be doubled. Intense halos can also produce "moondogs" or "sundogs," very bright regions on the halo evenly spaced at 90 degree intervals around the halo."
In 2012, British photographer Charlie Hamilton James captured a lunar rainbow, known as a 'moonbow', over Victoria Falls.
The phenomenon was caused by the light of a bright moon hitting the water, which sprayed up to 1,000-feet into the air.
He told Barcroft Media: "The photos of moon rainbows over The Devils Cataract are probably the first ever taken.
"Victoria Falls is also known as 'the smoke that thunders' because it creates such a huge spray of water - up to a mile high. This is obviously perfect conditions for rainbows - both day and night rainbows.
"We took them from Cataract Island in Zimbabwe and I spent several nights shooting more time lapses and also still images."
"Moon rainbows are not a rare phenomenon you just need the conditions - large amounts of spray and a full moon," said Charlie.