This map is mostly indoors, with 3 relatively small outdoor areas. The indoor portion of this Map features alot of tight corners with several open areas and long corridors.
There is a good chance that you may not find rooms that have this map. Blackwoods is one of those maps that has a TON of places to hide, and plenty of shrubs, bushes, and trees to hide behind, making it a perfect place to equip a Ghille Suit as you will be virtually invisible.
If you're a fan of a close quarters combat, but like the freedom of some open areas, then this is your map. Boneyard features several Cargo Ships with tight corners and small areas. It also has several areas outside of the ships that have different elevations. (i.e. you can climp ontop of cargo crates, or on watch towers, etc)
One of my personal favorites. This map has tons of corners for full out Close Quarters Combat. There are many different rooms, stairs, and paths to take on this map.
*********** 8e Crucible *********** http://liquidarrow.com/socom/maps/Crucible_HighRes.jpg
One of the Larger maps of the game, Crucible features a ton of Good Sniping Areas and PLENTY open areas for combat. On default settings you will normally spawn right next to humvee's/pick up trucks. If you happen to hop in a vehicle you'll find yourself racing to the TANK which is in the Center of the map Equal distance (give or take) from the opposing teams. If on foot there are alot of areas only accessible by foot.
Another one of the larger maps, Devil's Road features large open areas along with some sections only accessible on foot. It has a small town on one end of it which has several huts which you can enter and hide or, or snipe from. This map also has great Sniping Areas, featuring some of the highest cliffs to snipe from out of all the maps.
If you've ever played Socom 1 or 2 then this map is Very similar to Rats Nest. It is totally indoors, and has many clausterphobic twists and turns that will pretty much guarantee you be face to face with an enemy when you least expect it.
Harvester was the featured map in the Socom 3 Beta Test. This is possibly one of the most diverse maps in the entire game. This map features a small river that wraps around the outskirts of the map, Several structures (barn, house) which you can enter and hide/shoot from. It has many levels of elevation which are great for sniping, and plenty of objects to hide behind. You'll see many rooms with this map included in the playlist. Simply put, one of the most if not THE MOST well balanced maps in the game.
Quite possibly the Largest Map in the Game, this map has Huge open areas with minimal cover (A Snipers dream). You better pray that you have vehicles enabled on this map when playing, otherwise it'll take you a LONG time to get anywhere. Besides the wide open area there are 3 other mains areas of Gameplay 2 small bases where the Seals/Terrorists spawn, and 1 Main center area where a good portion of battle may take place considering the size of it. This section of the map resembles Crossroads a bit from Socom 2.
************** 8j Storm Front ************** http://liquidarrow.com/socom/maps/Storm%20Front_HighRes.jpg
This map is made up of several small island with with Water making up a large portion of the map. Although it wouldnt look like it at first, this is actually quite a popular sniping map. Since it has many wide open areas, you can hide yourself quite far away, with clear line of sight at your enemy.
This map is basically 1 Large area surrounded by water. I would call it an island, but its more like a peninsula with 3 sides touching water. The map has tons of vegitation to hide in, along with several structers you can enter. One main point I'd like to state is that this map is like many reallife islands, where the center of it is the Highest Elevation. The highest point of this map has a large open area with a few huts inbetween, the terrain is completely uneven which makes for some interesting battles.
This map is awesome. Many people seem to dislike this map, but its a great map. While not the largest map in the game, it features Many "Nooks and Crannies". Plenty of buildings to enter, many many different levels of elevation, the entire map is covered in Water, which is great for hiding. The center of the map features the Courtyard which is where some heavy fighting has taken place in my online gaming experience. Overal a great map, which you'll find yourself discovering new things each time you play it.