This. ^
My (young adult) DD and I were at a famous beauty spot some weeks ago, and there was no-one there ... We had walked from the car park - it was 10 minutes walk...
We looked at the wonderful view for a few minutes, and then thought we would take some photos. A few of each other, a few joint selfies, and a few self timer ones. We both wanted to take 3 or 4 videos too.
We had taken 2 photos, and this man popped up out of nowhere, and started chatting shit. 'Oh it's nice here isn't it girls?' We were like 'err yeah, it is.' We tried to carry on with what we were doing, but he would not STFU. He kept babbling on and chatting, even though we were trying to take photos and videos. I had to keep restarting my videos, as he kept talking over them. I was thinking 'oh FFS!' 
DD and I were trying to take selfies and self timer pics and he was standing there, no more than 10-12 feet from us, just watching. It made us so uneasy, and gave us the collywobbles. So we just left and walked back to the car. 15 minutes later, he walked past and went to his car and drove off. Fucking weirdo.
So we waited 10 minutes, and walked back, and did what we should have done before the creepy man came along.
The 'oh dear men can't do anything' posters can just jog on honestly! How fucking dare he just intrude like this? He would never have done it if my DH had been with us.