How to advance through Queen's Garden (details inside)? POSSIBLE SPOILERS

[Selik]

Hi community.

Please help to advance into Queen's Garden.
http://prntscr.com/fzcl7k - this is screenshot of my map. With circles I highlighted possible ways, but all are closed:
- blue - just the wall (where the prophet is),
- yellow - rope-block, which should be nailed from the other side,
- red - block with lever, which should be pulled from the other side,
- green - just gate with no observable lever.

What am I missing here and what to do next? I cleaned basically every other location)

Thanks

[Hedgelord, Lord of Hedges]

Green circle is where you go to progress in the level. The lever is in the room, but is not next to the door.

[Selik]

wow, really, I just missed the bigger part of the room somehow. Thanks a lot!