Unfortunately my internet is extremely limited..I am on board ship and no access to youtube

.. Can you tell me how to reach the key please?
Here is the text version:
01) you are back of the library of course.
02) look at the right of the big red building = library, you should see part of a pillar and a pressure plate that looks like a hole.
03) go along the white border of the building walking toward the column, suddenly you are hidden by the building, carry on till you reach the pillar.
04) click on the pillar.
05) select pickaxe. The pillar explodes.
06)now the path is clear to reach the pressure plate.
07) if you walk on the pressure plate and look at the menhirs protecting the key, you see that the menhirs vanish.
08) ooh. if I could push something on the pressure plate I could access the key.
09) Darn am I lucky there is a stone back of the library.
10) push the stone south by putting your MC north of the stone and pressing the down arrow key of your keyboard.
11) push the stone east by putting your MC west of the stone and pressing the left arrow key of your keyboard.
12) bingo the menhirs vanish and you can pick up the darn gothic key.
and they say a picture is worth a thousand words!