Mountain rescue volunteers are a rare breed: they’re on call 24/7, ready to risk their lives to save hikers and skiers who get stuck on the mountains. Kim Chakanetsa meets two women who lead perilous rescue missions in Canada and in the UK.

Kirsty Pallas is a mountaineering and climbing instructor based in Scotland. In 2014 she joined the Oban Mountain Rescue Team, where she’s a callout manager and a training officer. She’s also the founder of Our Shared Outdoors, an organisation set up to tackle and change the lack of diversity in the outdoors and promote underrepresented groups.

Kayla Brolly is an emergency room nurse and a crew member with North Shore Rescue, the busiest volunteer search and rescue organisation in Canada. She’s been involved in countless rescue operations in the popular hiking and skiing mountains north of Vancouver. In December 2017, whilst taking part in a delicate rescue mission on a steep slope, she suffered a severe head injury.

Produced by Alice Gioia for BBC World Service.