Tour to Germany, Back to Masserberg part 2

At the stop Julian looked through his maps and found where a hill climb takes place so we set off to Masserberg (again) and took the awesome road Julian circled. Later when we're on the motorway Tony pulled off, but Julian didn't see (because Tony was a bit too far ahead) so he didn't pull off and we all followed Julian. We approached a tunnel with a sign that said 7 at first we assumed it was 7 meters but it was 7 kilometres long it seemed as it went for ages. After a while of GPS routing we managed to find a way back and get back to Masserberg.