The shape is close to the color swamp
On the path up the mountain, stop just before the tree that doubles as a bridge. If you look down here, you'll see a circular pool near the Color Swamp. You'll have no trouble lining up the rest of this shape.
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Complete spoiler:
Look for a round pool below
Roll over each black area below for hints.
Each new hint gives away more than the previous one.
Intro
Fairly simple and easy to find. Requires only an observant eye.
Go for a hike and do some sightseeing
Location:
You won't need to travel far from the obelisk
This one is found by looking down from above
Somewhere between the two most colorful areas near the obelisk
On the path to the top of the mountain
Hints:
Map
River Obelisk
NE #6
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THE WITNESS - ENVIRONMENTAL PUZZLE HINT GUIDE