Answer:
i made a video on what i think you are talkig about a bit ago. im like 99% sure its the same thing. here is the link, h tt ps:/ /tiny url . c o m / e 6 j 6 c 8 w
I agree completely. one hundred percent
point B this is a topographic map the lines indicate the elevation of the area and B is at the lowest elevation which would be where the water would gather