Head torch advice follows night-time rescue on Arran
Walkers and climbers are being reminded to pack head torches in their rucksacks after the change to darker evenings.
Mountaineering Scotland said three walkers were caught out without torches on a ridge on Arran on Monday.
Arran Mountain Rescue Team was alerted at 21:00 and went to the aid of the walkers who were lost between Cir Mhor and Caisteal Abhail.
Mountaineering Scotland said the "tired, cold and frightened" hillwalkers were led to safety.
Heather Morning, mountain safety adviser with Mountaineering Scotland, said: "It is amazing how quickly the Scottish summer recedes into autumn and the woodlands and hillsides bloom in their autumn gold.
"It's a great time of year to get out into the hills, when the midges have been zapped by the first frosts and, if you are lucky, the air is clear and cool and you can see for miles.
"But it is also a time of year when hillwalkers get caught out without the kit they need to get off the hill safely."
Kevin Mitchell, vice chairman of Scottish Mountain Rescue, added: "This is a good time to check your head torch is in the rucksack, renew the batteries, put a fresh spare set in the top pocket and set off earlier to allow for earlier sunsets."