Anyone else have problems with this, I finally had to look up the answer?
It was very tricky seeing that door blocked by the pillar as you walk down the hall.
Seriously, I walked down the hall and found one then left the crypt ... realized I went out the door that was locked before and thought - what is the likelihood that they would re-spawn in areas I had already searched. So I went back in and found the two areas. That one just into the first hallway took me longest, though ...
Teach me the Z-Lock power, Obi!
The Darkside clouds my mind making me think I don't need sleep and there is a big giant treasure just around the next corner.