For what ever reason, I often enjoy hiking by myself. Finding trails and areas that are not being highly traveled. This can also be achieved by hiking in extreme weather or early or late in the day.
When hiking during the winter extreme low temperatures of around 10 degrees Fahrenheit or less starts to make the snow squeak when you walk on it. The colder it gets the more squeaky. This reminds me of eating fresh cheese curds.
Leaves can catch the eye when hiking during the winter, adding color and shape to the landscape. These leaves that remain during the Winter are referred to as marcescent. The leaves remain until wind or other force removes them. It may be on all or part of a tree or plant. Many Oaks seem to hold on to their leaves. I have looked but I am unable to find a definitive reason for marcescence.