DARING thrillseekers sailed over a 200ft drop near Ripponden - with only a wire to cling to.
About 200 people took part in a fundraising zipslide event at Baitings Dam.
They raised £30,000 for Cancer Research UK, who organised the event.
Brave fundraisers were given training on the day, before stepping up to the 200ft- high dam wall and setting off on a 500ft-long zipslide trip to the ground.
Event organiser Peter Crampton said: "Both days have been excellent. Everybody has come back with a smile on their face."
The daredevils were aged from 12 to 72. The oldest person taking part was Charles Smith, of Denby Dale.
Mr Crampton said: "He was pretty brave and he really enjoyed it."
Six employees from the Happy Days Nursery in Huddersfield took on the challenge, as did four staff from Avocet Hardware in Brighouse.