Student or Learner
According to the following attachment:
"straight down","exposed rock",loose soil away" mean?!
straight down means straight?!
Base on the following dictionaries I couldn't find the meaning which matched to the above words.
I really appreciate your help.
Straight down means what it says. Imagine standing on a flat piece of ground. Start digging a hole in the ground. That is straight down.
This article is talking about digging into the side of a hill.
There is apparently sandstone that they are looking to dig into. This stone is underneath a surface layer of soil and vegetation. You have to remove this "loose soil" in order to "expose" the rock.
Something that is exposed you can see.