The 'X' marks the spot of an unconfirmed location for Survivor 3. Below is a public domain, unclassified Landsat color-enhanced image of the region. Green is vegetation. Notice the thin line of vegation that follows the Ewaso Ng'iro river, like a linear oasis. Because of the deadly African animals fencing is a must for overnight camping.
Thornbush fences are traditional, electric fences are common.
All of this fits with Jeff Probst's latest teaser that he is traveling to Nairobi, to film the intro for S3 that will be shown during the S2 Town Meeting. The African Savannah, Probst said on April 30th. Have you thought about where Tribal Council will be. Very far along. Tribal Council is completely designed and structure planning has begun.