This is a togher, a type of trackway constructed from timber and brushwood across Irish bogs and wetlands, and examples like this one offer a surprisingly precise record of early engineering decisions made in places that have since been largely forgotten.

This particular togher runs to a length of seventeen metres, with a width of around two and a half metres and a thickness of roughly forty centimetres. Its construction follows a deliberate logic: longitudinal roundwood timbers, meaning lengths of small-diameter timber used roughly as felled, were packed tightly together along the centre of the track where the weight of foot or animal traffic would have been greatest, then laid more loosely towards the edges. Two heavier roundwood pieces defined the outer margins of the structure, both aligned on a west-northwest to east-southeast orientation. Between and beneath the larger timbers, small brushwood and twigs were worked in, likely to distribute load and prevent the heavier elements from sinking unevenly into the soft ground. It is a pragmatic piece of construction, solved with whatever the surrounding landscape could supply.