Very Odd Pic?

Hi Team
just been looking at my pic i took on my phone and came across this one what do you think?...it was taken while i went with my son for a walk the shot is of a path leading to a bomb shelter...im not sure what this bright white line is any ideas?

looks like it could be a light reflection on the lens, 2 nice big orbs on there as well

My guess is a spiders web, they glow pretty heavy when hit by light, if you look carefully to the pictures right, you can see the faint streak.