It is easy to miss, barely knee-height at 0.57 metres tall, its front face carrying a worn inscription that reads "10 From Galway", though the second digit of that number has been partially lost to spalling, the gradual flaking and erosion of the stone's surface. Cut into its top is a bird's-foot benchmark, the surveyor's mark used by the Ordnance Survey to record a precise point of known elevation, incised here so deeply that it has outlasted whatever road traffic once passed within arm's reach of it.

This is one of nine 18th-century milestones that once marked the Old Galway Road between Gort and Galway, a route that predates the modern road network and carried the kind of steady commercial and civic traffic that made measured distances genuinely useful. The Caherpeak stone is a well-dressed trapezoidal limestone pillar, slightly wider at the rear than at the front, with a faint chamfer along the front margins. Work by the Ardrahan Heritage Group has identified and documented all nine surviving stones along this corridor, and the Caherpeak example appears on the 1933 edition of the Ordnance Survey six-inch map, marked simply as "M.S.", shorthand that the surveyors used consistently for milestones across the country. That it was already notable enough to record by then suggests it had been standing and legible for some considerable time.

The stone sits on the roadside verge and is accessible from the R458, though its modest scale means that anyone driving past at speed is unlikely to notice it. What rewards a closer look is the layering of purposes the object has served: a practical distance marker for 18th-century travellers, a benchmark reference point for 19th-century surveyors, and now a small but documented fragment of a largely forgotten road's history.