The first thing our eyes were drawn to in this cluster is a group of three points that form a perfect equilateral triangle.  Exactly 200 meters apart from one another, separated by thick jungle vegetation.

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The triangle is bisected between points A and C by a 2.5 km line formed by three points that line up perfectly (BDK).  Point C rests on the larger circle and is the exact point that helps divide the circle into quarters.