The Princess of Wales, Catherine, recently undertook the gruelling National Three Peaks Challenge, scaling three of the UK's highest mountains within 24 hours. Her younger brother, James Middleton, was seen assisting her down Mount Snowdon in Wales in a video captured by a fellow hiker. The clip shows a smiling Kate, dressed in outdoor gear, holding James's hand as they descended.

The challenge, which involved trekking 23 miles with over 10,000 feet of ascent and driving 462 miles between peaks, was undertaken by Catherine to spread a message about life during and after cancer. She completed the event solo, supported by Mountain Rescue, and her family, including her parents Carole and Michael Middleton, met her at the base of Snowdon.

James Middleton had previously expressed his pride in his sister's endeavor, sharing a childhood photo of them on a hiking trip and writing, "Over the years, we have climbed many mountains together. As a family, we will climb this one with you too." He also discreetly posted mountain and heart emojis under a photo of Catherine celebrating her completion.

This act of support between the siblings resonated with royal observers, recalling how Catherine had attended therapy sessions with James when he was being treated for severe depression. James had shared that he felt most comfortable bringing his sisters, Catherine and Pippa, to his therapy sessions, describing their engagement as a "very moving moment."

The National Three Peaks Challenge includes climbing Ben Nevis in Scotland, Scafell Pike in England, and Snowdon in Wales. It is believed Catherine's completion marks a royal first for the challenge. She stated on Instagram that she viewed the challenge as an opportunity to "raise awareness" and give back, particularly mentioning the Royal Marsden, a cancer care center that holds significant meaning for her.