If you're going up on the moors it's best to take a short length of wooden ladder then, if you fall into a bog, you can put the ladder over the surface and use it to get free. Also there are some stones near Robin Hood's Bay that are under-imaged. Are they a collection of odd stones, a stone row, or something completely different? Red, something, not far from the road, quite large lumps.

Howdo YP,
The causeway is pretty close to the road, it's usually quite boggy up there so a pair of wellies may be a good idea.
tracking down the origins of Wade near drove me around the bend but that's another tale.
Check out this
http://www.themodernantiquarian.com/site/6609/wheeldale_moor_cist.html
The page has a letter from Blaise Vyner giving his theory that the causeway may be a lot older than Roman, there's plenty of folk who don't agree though.
Whilst in the area you should have a look at this
http://www.themodernantiquarian.com/site/6683/old_wifes_well.html
It has a disputed tag on it but I'm don't let that put you off, this well is on the margin of a large site that has substantial evidence of occupation from the mesolithic to the bronze age and is the only decent water source around, plus it's pretty.
A walk up to this place from the causeway is not to difficult
http://www.themodernantiquarian.com/site/2948/simon_howe.html
Whilst your on the road it's worth having a look at the Wheeldale stones, mixed feelings over the antiquity of these but they're worth seeing.
Have a good trip
fitz