You have been crossing this hot and wet place for weeks now, but when you enter the cool and mouldy ruin, you know in seconds it has been worth it. Nobody has ever been here ( - well nobody in last millennia at least - ) and the ancient writings and symbols all over the place are comparable to none you've ever seen. Could it really have been build by aliens? The answer is quite possibly behind this huge, stone door in front of you. You approach cautiously, anxiously noticing the holes in the floor and ceiling which don't promise much good for unwelcomed guests. There is no handle on that door, but 5 oddly shaped intentions which are far too regular to be anything else than a hidden mechanism.
And of course you recognize the shape immediately. After all, it was the amulet consisting of 5 elements shaped exactly like this, which send you on this endless quest in a first place. Eagerly, you pour out the pouch you've brought to bring out the five pieces which were once, ages ago, stringed together on a leather string. 5 indentations, 5 puzzle pieces of matching size - what could be more obvious?
But the one thing, which has been missing whenever you pondered over the meaning of the symbols on the pieces in the past is only now in front of you. Directly above the little panel, nearly aged away by the forces of nature over the years, are some instructions in the stone. Will they be enough to help you? Again you suspiciously eye the holes in the floor and the ceiling. There might only be once way to find out - but there might as well only be a single chance to get it right...
Labelling the 5 pieces from left to right as A, B, C, D, and E. In which order will you dare to put them into the 5 indentations (#1 to #5 from left to right.)?
I would like to thank Peter for sorting out an ambiguity of the original puzzle (and solving it as well). The puzzle as presented above does include this fix.