Erudite achievement - Where is the pier mingame with spikes?

[MrL0G1C]

I've looked at a walkthrough and have no clue where this pier is, seems like they used the term pier loosely.

Where is this pier? how far through the game?

Note: What bloody spikes? I see no spikes and it isn't exactly a pier either.

[MrL0G1C]

Found it, it's here at 04:20
https://youtu.be/BjiF5PAiMFM?list=PLgYZP8HR5eDKKTAIqEAgfmA__yBS_ASIa&t=260

You have to go to the next section, grab some stone tablet and bring it back to start this puzzle.

[MrL0G1C]

Erudite game solution:

 ↺ 1                 

        ↻ 2          

 ↺ 1                 

        ↻ 2          

                ↻ 2  

Which is:

1. Left circle anti-clockwise 1-part
2. Middle circle clockwise 2 parts

note: The next 2 are the same as the first 2 moves

3. Left circle anti-clockwise 1-part
4. Middle circle clockwise 2 parts

5. Right circle clockwise 2 parts