In January 2015, Margaret and Angus Mackenzie’s son Neil died in a climbing accident in Canada. Neil loved the outdoors, and to continue his memory, the couple set up a trust in his name to provide funding for those wanting to access outdoor pursuits. This year they’re undertaking a bit of a walking challenge as Mark found out when he went to meet them.

Across the country, a growing number of citizen scientists are monitoring the state of our rivers. Rachel heads to the Clyde Valley to catch up with a ranger who is testing her stretch of the river for signs of pollution.

In this week’s Scotland Outdoors podcast, Mark meets poet and artist Kenneth Steven who lives on Seil Island. Kenneth’s recent book, Atoms of Delight, focuses on the idea of pilgrimages in nature. He explained the concept to Mark.

Rachel is in Aberdeenshire meeting the only commercial grower of Saskatoons - a type of super berry. Grower Charlie explains more about the fruit, which is common in Canada, and why he started growing them.

The shortlist for this year’s Woodland Trust Tree of the Year competition has been unveiled, and there are three oaks from Scotland in the running. We chat to George Anderson from the Woodland Trust about the competition and get an update on the Loch Arkaig Ospreys.

Inverness Castle is currently undergoing a major transformation to turn it into a tourist attraction. Mark visited the site and spoke to the project manager about what they’re doing and also heard about the restoration of the impressive rose window.

Fifty years ago this year, the MV Captayannis, a Greek-registered ship carrying a cargo of sugar, foundered in a storm in the Firth of Clyde, between Greenock and Helensburgh. The ship was never salvaged and became a bit of local landmark. Paul English went on one of the sightseeing trips run by Clyde Charters to get up close with the sugar ship wreck.

If you’ve been in Perthshire over the last few weeks, you may have noticed some rather striking Highland Coos. Thirty giant sculptures painted by artists have been dotted around the region as part of a new art trail. Rachel met one of the artists, Charlotte Brayley, and her colourful coo creation in Perth.