You want a textbook example of the importance of good battlefield reconnaissance? Take a close look at Sidewinder Ravine. Sure you can attack your enemy with ground troops, just don't expect any results. This place has more twists than a pretzel caught in a blender! Even if you do finally get over to the enemy, he'll probably have Siege Tanks on the ridges ready to rain down death and destruction on your troops below. I'd suggest just attacking from the air, and hope your opponent hasn't figured out the near futility of a land based attack.
2000-08-07, Sidewinder. StarCraft Compendium Map Archives. Accessed on 2008-01-17