I've just found a set of photographs that I took when walking up one of our local brutish climbs - 'Mytholm Steeps'. This link will take you to a slide-show of the climb which includes a 25% ramp. [NB I loaded the photos in the wrong order so you need to go to the options in the top RH corner of the page and select 'Play backwards', then start from the last photo in the list.]