A six-year-old boy has walked up three peaks in south and mid Wales to raise money for a hydrotherapy pool for children.
Dylan Carlyon, from Abergavenny, was inspired to support the Noah's Ark Appeal after his brother needed pool treatment to overcome problems walking.
His three challenges were Skirrid Mountain, Pen-y-Fan and Sugarloaf.
After the treks, his father David said: "All very tired but elated."
Dylan learned about hydrotherapy pools when his brother Hari was found to have hypermobility in his joints, meaning he was unable to crawl or walk.
However, after hydrotherapy treatment at his local hospital, Hari began to take his first steps.
The Noah's Ark Appeal, which has raised millions of pounds for a children's hospital in Cardiff, is now trying to raise another £7m for projects including a hydrotherapy pool.
Dylan's mother, Ceri, said: "Dylan has always been very supportive to Hari, both physically and mentally."
She said Dylan helped his brother take his first steps.
He was inspired to raise money after discovering the hydrotherapy pool was a shared resource with only limited time for children's' physiotherapy.
He then discovered the Noah's Ark Appeal was trying to raise money.
David Carlyon, who did the mountain walk with his son, said the two of them started at 08:50 BST on Saturday and were on the summit of Skirrid Mountain at 17:50 BST.
It took them a further hour to walk down having made an overall ascent throughout the day of 6,263ft (1,908m), he added.
He said: "We were all very tired but elated. Dylan was in very high spirits afterwards.
"He acquired two blisters on his journey but he was really pleased with himself."
Skirrid Mountain is 1,601ft (488m) high, Sugarloaf is 1,955ft (596m) and Pen-Y-Fan is 2,907ft (886m) high.
Dylan, whose target was £500, has raised £2,701 so far.