Condition Fog

As I sit at a computer in the second floor of the Crary Science building I cannot help but notice the closing wall of fog that has been slowly approaching the station. Looking down along the road I noticed two small specks. Upon looking through a telescope I noticed that there are two people on skis heading into the weather. I followed the road with the telescope and it disappears into the wall. I have no clue what they are thinking. That wall of fog looks like it is over a thousand feet high and I have been watching its progress and it looks like it is fast closing. I would never consider skiing into that.