MM7 Obelisks

If you put them in order and read down each column you will see the clue

1   p o h u w w b a
2   i n i n h i l _
3   r e d d i t o h
4   a _ e e t c o a
5   t s _ r e h m u
6   e u t _ _ i _ n
7   s r h t f n u t
8   _ v e h l g p e
9   f i _ e o _ o d
10  i v g _ w h n _
11  v e o s e o _ l
12  e _ l a r u _ a
13  _ _ d n _ r _ n
14  _ _ _ d _ _ _ d

pirates five one survive hide the gold under the sand white flower witching hour bloom upon a haunted land

Even though you know the clue, you still need to go touch each Obelisk to be able to access the treasure.  The treasure can be found in Evenmorn Islands between 12-1am.  The chest contains 100,000 gold 2 ancient named items and a few other random bits.