[chubbyhubby]

Actually, these were non-reflective and made of either brass or stainless steel. Size-wise, they were only 1" or less in diameter and looked as if they were held in the ground with just a stud in the center. Some were round, and some were hexagonal, but all were either flush with the ground or only stuck up around 1/4". We also saw many of them in very nondescript areas, in various locations around temple walkways where there is nothing to mark out. Very puzzling to me...