Wow, lovely landscape but those 2 holes are most intriguing.  Caused by meteorite hits or possible a huge sinkhole?  Nicely flown, filmed and edited.  

DowntownRDB Posted at 1-5 15:38
Wow, lovely landscape but those 2 holes are most intriguing.  Caused by meteorite hits or possible a huge sinkhole?  Nicely flown, filmed and edited.

Thanks. Yes indeed they are intriguing. Nobody knows how they were created

Im assuming the holes are from meteors.  

Flying over Greece Posted at 1-6 00:17
Thanks. Yes indeed they are intriguing. Nobody knows how they were created

You're most welcome.  I tried to do a little googling on them but seems nobody knows for sure how they formed.  Still an unsolved mystery.

Any idea what that hole is?