Do they need a name? I don't think so. I could show you many a rocky outcrop that has a definite bearing on a site, but which have no names.

If they seem important to us 'modern' folk, then I'm sure they must have seemed important to the Builders.

If you think it's significant then it's worth a mention. that way someone else can look out for it. They may come back and say 'Bollox!', they may come back and 'Wow!'. Whichever it is, it doesn't matter. What matters is that it's been thought about.