Fido, you are missing a second peninsula southwest of Paleto, you can see it here.
It is further than the sandy one and has 5 trees on it, also can be seen from the Bixby Bridge (when Trevor is evading cops in the gameplay trailer).
And yes Paleto is in the NW quadrant of the map, to all those who think Fido or Zombie Elvis' (which I feel should be on the front page as well) maps are putting it too far west.
Also, I think the scene with Franklin shooting a bunch of guys on a red building in the Gameplay video is in the NW also, from an initial examination, that is the S-NW part of Alamo Mountain (you also see some kind of construct in a possible location in the Zoomout locale).
Edited by The Leprechaun, 21 July 2013 - 10:48 AM.