Places I ride tend to be woodlands and forests and issues with visibility are uncommon round my way. My navigation in such areas are typically by memory and I find I have a reasonable mental track of the direction. I usually know roughly where I am and in what direction is the nearest point of reference. Often get it right, but sometimes I get confused by areas that look similar to each other. Pine forests in particular where one area of trees looks the same as another. I keep track of the fireroads that cross them but do sometimes get mixed up when one looks the same as another.
Locally, Tunnel Hill is a good example of an area that gives me problems. An essentially small area of MOD pine woodland land with a lot crammed in, and frequently find parts look the same, and nearby Porridgepot I find is so similar in parts. I sometimes think I'm on the wrong hill. I'll navigate by the trails I'm looking for when I find them. Compass or GPS is fine to know which way I'm facing, but the maps, even detail OS maps, show little other than I'm in a patch of woodlands. Can easily find my way out, but not always the trails I'm looking for.
I can navigate with map and compass though if necessary. Growing up in Devon it's essential to learn, especially if you venture onto Dartmoor where you really can get seriously lost in good or bad visibility.
If I go somewhere with a large area that's utterly unknown to me I'll make a copy of an OS map section, pop in a plastic pocket and keep it in the bag. Always have a compass in there anyway, despite all the phone GPS stuff. Battery can easily crap out on me, or the phone crashes, GPS signal lost, etc.
Dont we just follow these?
Not many of those round my way. Though there are plenty of Public Footpath and No Cycling. So I follow those. Cheeky trails