Four climbers had to be rescued by helicopter from a mountain in Japan after a brown bear blocked their descent and left them stranded for over three hours.
The group became trapped on Saturday afternoon after one of them, a man in his 60s, spotted a bear nearly 50m ahead on a trail while descending a 2,141m mountain in Hokkaido, northern Japan.
Three other climbers caught up with him and they were unable to continue.
One of them called emergency services at around 4.50pm local time and all four were airlifted to safety. No one was injured. The bear was described as being around 1.5m tall.
The incident occurred the same day that Mount Rausu on Hokkaido's Shiretoko Peninsula, a Unesco World Natural Heritage site, opened to climbers for the first time since last August, when a 26-year-old hiker was killed in a bear attack there. Nearly 50 city officials and climbers attended a ceremony on Sunday morning to mark the reopening.
Also on Sunday, an 83-year-old man was attacked by a bear while picking mountain vegetables in Akita prefecture in northeastern Japan.
He suffered injuries to his head and face but was able to communicate when taken to hospital, police said.
The incidents add to a sharp rise in bear encounters across Japan. At least five people have been killed by bears since 1 April, following a record 13 deaths in the last fiscal year.
Japan has begun installing more than 800 cameras in its northern mountains as part of a nationwide bear population survey and authorities in several cities have distributed anti-bear sprays and set up deterrent devices at schools and community facilities.
Bear sightings have climbed to an exceptionally high level, with the Tohoku region recording the greatest concentration of incidents.
Scientists attribute the rise to a combination of factors – increase in bear populations, decline of rural communities removing the buffer between bears and towns, poor harvests of mountain food sources such as acorns and beech nuts that push bears to seek food at lower elevations and in suburban areas.
Climate change is also shortening hibernation periods, extending the months in which bears are active and encounters are possible.
Authorities have recommended that hikers travel in groups, carry bear spray and attach bells to their bags, although some researchers have raised questions about whether bells might, in some cases at least, attract rather than deter bears.
The environment ministry uses a four-level alert system for brown bear activity, and bear sighting maps updated in real time are now widely used by hikers and rural residents planning outdoor activities.
