The comet of the holocene

[Laura]

I sent the image link to Allen West, one of the authors of "The Cycle of Cosmic Catastrophes" which is about the Holocene event. He responded:

Looks intriguing, but the feature is very old and was caused by the same
folding of the continental margin that pushed up the Appalachians. If that were
a recent impact feature, all the evidence that goes with such an impact would
have been discovered long ago. Sorry, but there is none.

 

[D69]

When i was reading this thread while ago I opened a link provided by MrGullible

_http://www.maps-for-free.com/

And i was thinking about circular ripples which are an effect of detonation or an effect of hit by large object.
One crazy idea came to my mind while looking at map of globe. :O

I draw a line where this mentioned ripple effect apears.
Is it actually really crazy ?
What do you think ?