Is it a physical location or a state of mind? A place to go when the day starts to overwhelm.
There are many physical Fourth Lake's. The one I am most familiar with is part of the Fulton Chain of Lakes in the Adirondack Mountains of upstate New York, USA.
There are also Fourth Lakes in Illinois, Minnesota, ...
I wrote a little code for this nice little php script that will read the contents of an Excel file and dump it into an array.
You can see an example of the output here
This is a little set of scripts that allows MinuteWar players and teams to more easily keep track of visits they've made and the progress of the game.
MWC is an awesome tool for MinuteWar players, but is not well-documented. There is some basic documentation here.
These are track logs of some of my kayaking trips. I belong to the Western Sea Kayakers kayak club. I have found the variety and quality of trips as well as the friendliness and skills of the members to be outstanding.