There was a recent article on Gnome Stew called Quick and Dirty Location Template. The article presents a template on how to create a quick blurb on a location for you your game with relative ease. This is an excellent template that I plan on using to detail locations for may game before writing up larger articles. Below is one of the locations I created in less than five minutes.
Name: Glass Sea of Trinity
Ambiance: A harsh desert covered with jagged chunks of fused glass.
History: Rumored to be unihabitable, high radiation level cause it to be highly avoided.
Encounters: Centicores have been sighted at the edges of the Glass Sea. Cannabilistic humanoids and a strange species of Glass Sea Roaches can also be encounters.
Treasure: Very little can be found of use in the Glass Sea, the only salvagable items are irradated chunks of glass, called glow rocks, that give off light.
Hooks and Hotspots: Some scavengers want to travel to the Glass Sea to retreive glow rocks as a cheap form of light for their town. The party is hired to provide protection while they search.
Historic Note: Trinity was the location of the first nuclear testing, the rest melted the sand and create fused chunks of glass.