At this point there was a path across the bog, or rather a place where the mud and water were not so deep as at other points, and where it was possible for it to be forded.

Ginckle had found a peasant, who, for a large sum of money, disclosed the passage.

It traversed the bog at its narrowest point, the hill of Kilcomeden here running out a shoulder far into it.

Four regiments entered the morass, with orders to cross it, and make their way to the nearest hedges on the sloping ground, where they were to post themselves till the cavalry, who were to attempt the passage by Aughrim Castle, could come round to their support.
The first part of the passage was unopposed, but the difficulty of passing was great, for the men were frequently up to their waists in mud, too soft to afford any firm footing, but solid enough to render it extremely difficult for the feet to be disengaged from it.

At length, as they approached firmer ground, the Irish infantry advanced towards the edge of the bog, and received them with a steady fire.