I wouldn’t recommend doing what this YouTube vlogger does unless you are very knowledgeable about the dangers involved.
Unique German WW2 gun position. Why did the Germans do that ? YouTube Video: https://www.youtube.com/watch?v=0CjgKDhV73o (about 15:48 minutes long).
YouTube channel: https://www.youtube.com/channel/UCWaFLqinCCMRgnIyF_CuoaQ
From the About page on YouTube:
From the PS in the above quote, the vlogger won’t share locations.
He has a Patreon page: https://www.patreon.com/WW2HistoryHunter.
Google Plus: https://plus.google.com/+WW2HistoryHunter