I'm taking a hiatus from CC, but I wouldn't want to leave you on edge or without closure.
Just behind the trees in the first pic, the road takes a 90 degree turn to the left, the second photo is taken from the outside of the corner, and at the top of the road it turns right again and enters a cutting.
There are clues in this post, but I have included the following spoiler that will make things much much easier, please don't use it unless you're still stuck in a few days.
I wish you all much luck!
Just behind the trees in the first pic, the road takes a 90 degree turn to the left, the second photo is taken from the outside of the corner, and at the top of the road it turns right again and enters a cutting.
There are clues in this post, but I have included the following spoiler that will make things much much easier, please don't use it unless you're still stuck in a few days.
CaCO3
I wish you all much luck!