I have created a rustic path to a lower level area of our backyard. It is simply 3' length of 4x4 staked to the ground.

Our lot has a lot of elevation, so there are a couple of sections of the path that I would like to add a handrail to assist children or elders.

Does anyone have any references, pictures or links to something that would be unobtrusive, inexpensive and fairly easy to build.

I had originally thought of using simply putting in 4x4 posts upright and using rope but I couldn't find any good pictures and wasn't sure if it would be taunt enough.