Night Caching is using reflective trail markers to lead you to a cache. The coordinates given on the geocache page take you to a starting point. From there you need to find the reflective trail markers. This is not always as easy as it seems. The reflective trail markers are retro-reflective. This means they shine back towards the light source.
If you park at the posted coordinates you should find the starting point very easily. Continue to follow reflective markers, if you should find two markers together you must turn. This is a pretty quick night cache to find the final location. When you find yourself nowhere to go look for a circle of markers, when you find yourslf in the center of the circle you should know to look for the cache. While the path to this cache is not very hard the actiual finding is where the difficulty lies.