File:Black Mesa entrance AYool.jpg

Summary
The main entrance to the Anomalous Materials area of the Sector C Test Labs. Gordon Freeman has arrived late for an experiment, and finds that the computer network across Black Mesa is broken. On the map can be seen the logo of the facility, which depicts a mesa mountain against the sky.

Licensing: Fair use for Black Mesa Research Facility
The poster of the rationale asserts that the image qualifies fair use for the following reasons:
 * 1) Valve Corporation has not release location-specific images into public domain.
 * 2) The image is necessary to describe the appearance of a unique location in Black Mesa Research Facility; nothing else.
 * 3) The screenshot is not intended to hinder the copyright owner's ability to sell the game.
 * 4) This image is a game screenshot.