The border of the restricted area is marked by a line of orange posts, spaced about 50 yards apart. There is no fence, and these posts are very hard to see in the desert, especially at night. If you hike in that area, make sure that you know exactly where the border is, and do not hike at night.
There are also signs on both sides of Groom Lake Road that make it very clear that it is not a good idea to go any further ("Use of deadly force authorized").
When you get there you will notice a white Jeep Cherokee or a pickup truck of the "Cammo Dudes" sitting on a nearby hill. Also, about 3/4 up the hill to your left you will see two surveillance cameras watching you.
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