Is there an official description of the appearance and culture of tribal orcs?


I play on a Neverwinter Nights persistent world module that uses the Dungeons & Dragons 3.5 rules. I’m editing and updating the module’s features into a new document. The module allows players to pick different races. I want to add pictures of the various available races and a short blurb about each race’s culture to help players role-play.

However, I’m struggling to locate information on tribal orcs. I’d like to have a brief physical and cultural description of this race that’s drawn from official 3.5 material. Is such information available?