Tomb Raider II Lara's House Treasure Room

I have just made a silly discovery in Tomb Raider II that
didn't strike me earlier and I have heard nothing of it.. it's the
hidden Treasure Room in Lara's House. There is no comment on Lara's
House in the great walktrough and I haven't read about it on your site
either.. or maybe it's so trivial that I was the only one to not find
that room earlier.
Anyway, here's a short description about where to find the switch to
open (a timed door, btw) the door. On the left side of the house (when
Lara is facing the front portal) is a fountain and behind it is a maze
with very high walls. You have to get all the way to the other end of
the maze and find a tunnel in the ground that leads you to a room with
two statues, some flares and a button... press it, watch the movie to
see where to go and go there fast.. it's timed (you have quite some
ime to reach the door, but not too much!).
Down there is a room full of statues and chests..