I’m not a local, but I am a map freak, and did ponder a couple of the questions raised on this thread. Comparing the 6 in OS map surveyed in 1848 with Google map and the current OS map, it appears that along with the draining of Black Loch of Myrton the course of Monreith Burn was altered. It did originally connect with Black Loch, but now doesn’t. On the 1848 map,the section falling south to the coast was marked as Monreith Burn, whereas the section entering the Loch from east was marked as Drumfad Burn, (and as Dowie Burn even further east). The modern maps show it all as Monreith Burn. This Burn formed the boundary between the parishes, such that Black Loch Plantation was on the Mochrum side and Waterloo Plantation on the Glasserton side. The delineation of these forested areas has also changed since 1848, but the comparison remains recognisable. That places Black Loch of Myrton within the forested area on the Google map. I wonder how old the Google satellite image is and what the Loch area actually looks like today. The on-line photos look consistent with the excavation being in a wooded area. How I wish that I could access NearMap, with its higher definition and up to date images. Can any of the locals clarify if the excavation was in an existing clearing, or if trees or shrubs had to be removed? Bruce