What is hidden behind the large orange cover in Block Out Level 675?

It reveals a lower-right recess divided by a fixed purple hook, with another smaller orange numbered cover and a new blue/green group.

How do you route pieces around the purple hook?

Keep the throat on the hook's left empty, bring pieces around its lower end one at a time, and then split them toward the right and bottom gates.

Block Out level guide

expert 8 colors

Level 675 nests a small orange cover behind blue and orange outer covers, then routes the final wave around a fixed hooked purple wall.

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Remove the loose upper pink blocks through the left gate, slide the green horizontal right and lower the cyan L toward the left blue route.
Keep the orange vertical and tall yellow piece upright while sending the lower pink/yellow L shapes through bottom and left gates.
Clear the exposed strip until the blue 2-cover reaches zero, then route its blue and yellow reveal through the upper-right lane.
Use the wider top row to send green and cyan groups toward right gates while the large orange 4-cover counts down.
After the large cover opens, keep the throat left of the fixed purple hook empty and move right-pocket blue/green pieces away from the smaller cover.
Open the nested orange cover, then route its yellow, blue and orange L shapes around the lower end of the hook.
Clear long cyan and green groups through right gates and yellow pieces through the bottom gate, preserving the top orange lane.
Lift the orange L through the top orange gate as the final green piece exits right; the Level 676 journey screen confirms the clear.

Colors in this level:

Purple, Blue, Green, Red, Orange, Yellow, Pink, Cyan

Parking the long cyan bar across the hooked wall's throat before the nested orange cover releases its right-pocket blocks.
Using the top orange lane for temporary storage and leaving no route for the final orange L.

Treat the left side of the purple hook as a one-way transfer throat, not a storage lane.
Keep the top orange gate clear for the orange L that finishes the run.

Board notes 5 details

Layout: A blue 2-cover fills the upper right and a large orange 4-cover fills the lower right. Pink, green, yellow, orange and cyan L/bar pieces crowd the exposed left strip beside side and bottom gates.
Goal: Clear the left strip, open both outer covers and preserve the throat beside the fixed purple hook for the smaller orange cover's right-pocket reveal.
Opening: Remove the upper pink pieces, shift the green horizontal right and lower the cyan L toward the left blue route while orange/yellow verticals stay upright.
Danger Zone: A long cyan or green bar across the throat left of the purple hook traps every piece released into the lower-right pocket.
Mechanics: The blue 2-cover and orange 4-cover conceal a nested orange cover inside a recess divided by a permanent hooked wall.

What is hidden behind the large orange cover in Block Out Level 675?
It reveals a lower-right recess divided by a fixed purple hook, with another smaller orange numbered cover and a new blue/green group.
How do you route pieces around the purple hook?
Keep the throat on the hook's left empty, bring pieces around its lower end one at a time, and then split them toward the right and bottom gates.