 It had been known locally as "The King's Stables" for over 100 years, but recently the heritage industry has begun to call it Poltross Burn Milecastle, which is how it is now signposted.The monument is currently in the care of English Heritage.The milecastle measures 18.5 metres east to west by 21.3 metres north to south, substantially larger than many other milecastles.