The office tower I used to work in had similar problem. There were two mirror-glass walls that met at 90 degree angle facing each other and the resulting sun re

The office tower I used to work in had similar problem. There were two mirror-glass walls that met at 90 degree angle facing each other and the resulting sun reflection heated up the asphalt at the ground level to the point when it deformed into a wave pattern with about 1' wave length and 1/4' amplitude. Admittedly it led to few very cool "AHA" moments when new employees (on a smoke break) realized what was going on :)