@MichaelCule asked for a die roll:
The walk through the woods proceeds with no further ado and as the afternoon passes you sense, you think, the pressence of unseen observers once or twice… But not so certainly that it could not have been a squirrel or a song bird.
And then Wat says “Here we are, magister,” and you are aware you are standing on smooth, evenly laid stones. On a strip of straight well built road, that emerges from the tangled undergrowth as suddenly as if conjured by magic and heads north. The trees overhang it but for the length that it stretches, the old Roman workmanship is still evident and their roots have not tunneled under the raised surface. It peters out about a mile to the north but for that length is seems almost miraculously preserved.
There is a shrine to one side which Wat points out as one of the ‘magic places’ that his employers visit each year. A lttle way to the north is a plain flat stone that Big Harold says is another.
But (I assume) Acerbus has better eyes for seeing what is hidden than his two companions and asks for a moment’s quiet while he concentrates.
Second Sight Plus Perception.
stress 1+3: 1 × 4 = 4, +3 = total 7