Question

How can multiple echoes of a sinlgle sound can be produced ?

Answer 1

Yes, multiple echoes from a single sound can be produced. It is becausesound when collide with multiplesurfaces every surface produces echoby this way many echoes generate from a single voice.

Answer 2

due to vibrations and there nothing in that area to cut our voice only in open space we can hear echo due to there is more space