Weekly Photo Challenge: Edge

My response to this week’s theme is perhaps not completely coherent.  It is a set of pictures with a few different interpretations of the topic.

I was originally on the edge about submitting the following picture, but what the heck!

This person in the following picture is sitting on the edge of a cliff, while these folks are peering over the edge of a cliff overlooking the Kinkon Waterfalls in Guinea, West Africa.

This is the edge of Dam 5 on the Potomac river.

The following pictures are interpretations of the theme that may be considered a stretch, but I am presenting them anyway.  In the following picture you see the clean edges of the Washington Monument and the tents on the DC mall on a July 4th evening.

This next picture, taken at San Franciscio airport, shows an aircraft about to take off on what seems to be an edge between the water and the sky.  The picture is, of course, an illusion because of the angle at which it was taken.

The last picture is of a cliff at the Butt of Lewis on the northern tip of the Outer Hebrides in Scotland.  At this point one is facing the expanse of the northern Atlantic Ocean. This is the edge of land and sea.