in a cave
It is mainly in cold and wet areas as well as large,quiet places. Then in that case yup, forests do produce echo.
Echo is a delay of sound - it comes at a slower rate and appears to echo. Often distance is a major factor of echo.
we do not get echo at all the places because everywhere there cannot be the distance of 17.2m b/w the source of sound and the object.
Myths
A mirror, an echo and a bouncing ball are three common examples of reflection.
echo is nothing but the reflection of sound and it is used to find the distance of certain places like mountains and buildings.
Any wall in any enclosed room , hill or obstacle about 17 meters away or more will produce an echo.
You typically hear an echo in large, open spaces with hard surfaces that reflect sound, such as mountainous areas, canyons, or valleys. Indoor environments like empty gymnasiums, auditoriums, or churches with high ceilings can also produce echoes. Additionally, places like tunnels or large, empty warehouses can amplify sound reflections, creating noticeable echoes.
17.2m
An echo is a reflection of sound that may come from many places. Examples of echoes could be when sound bounces off the bottom of a well or a large room. There is a delay depending on distance.
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echo