I confess to not being an expert in Roman history, but I’m never heard of a Roman apiary being a thing to look out for. I never really gave much thought to whether the Roman kept bees, but it appears that they did and they kept them here. This is also, so I’ve read in numerous places, the best example of a Roman apiary in the world (although there’s at least one other in Malta, so it’s not unique), so at least I’ve been introduced to the subject matter in style.
The bees were kept in the holes and there was access behind the holes for people to, well, tend the bees or whatever it is they do. I decided not to investigate in these tunnels as they weren’t that high and more importantly, it looked too scary.