Echoe is a familiar word to many of us. You know, it's like what happens when you shout to a solid wall and hear your own voice being repeated.
I was told that the word came from the Greek mythology. Echoe was the name of a talkative oread (mountain nymph) who loved her own voice very much. She was punished by Hera - Seuz' wife - for preventing her from catching her husband's love affairs with the other nymphs by taking away her voice. From then on Echo could only foolishly repeat another's shouted words.
What does it have to to with these photos?
For one, it's their titles: Echo 1 and Echo 2.
The rest is not my right to say. Let them speak for themselves.