I still remember the first time I talked to someone on a cell phone while on a hike in a forest preserve. It was very surreal. I had never been in an environment like that before while talking on a phone. I was used to being inside some sort of structure or vehicle where there were many hard surfaces for my voice to reflect off of back at me. This conversation was calm and subtle. The wind lazily winding through the trees replaced the normal background noise of engines and ventilation equipment.