hvered
'
Like their Megalithic counterparts they remained in situ yet were adept at relaying messages and gossip as well as directing people. Plus ça change.'
That sounds rather like the MacLeods when they took over from the MacNicols in the Hebrides.
The MacNicols had been the most powerful clan not only on the islands but also the mainland of north west Scotland. One of their duties was to light the beacon fires, ostensibly for the Norse to steer their way safely south. Some believe the MacNicols were in the area long before the Viking age so were possibly carrying on an ancient tradition.
They were deposed from this position and their lands when a MacLeod chief killed the male MacNicols who were in line to inherit, and married the surviving daughter gaining possession of lands and titles in the process. It's thought that an early coat of arms was also taken over by the MacLeods. This showed a mountain side with bonfires.
'The Highland Clan MacNeacail (MacNicol): A History of the Nicolsons of Scorrybreac by W. David H. Sellar and Alasdair Maclean.'
'The coat of arms of the MacLeods of Lewis, which contains a black burning mountain on a gold field, probably passed into the possession of the MacLeods through the marriage to the MacNicol heiress.
'Sellar considered the possibility that the arms may represent the MacNicols' subordinate duty as coast watchers for the early Norse kings in the Isles. The early MacLeod of Lewis arms was recorded in the mid 15th century and is blazoned Or, a rock azure in flames gules.
After seeing what happened with MacNicol fortune, the MacLeods changed the rule book on inheritance. No longer would it be permitted to leave such wealth to an heiress; instead it must be passed to the closest male heir.'
An image of this coat of arms is to be found here.
https://clanmacnicol.org/historyCommunications are essential for the survival of any society so it makes sense to have permanent way markers and protectors as a matter of course.