i would also like some more titles.
can't really think of anything similar myself.
i wouldnt say Shpongle or Celtic Cross, its not the same mood.
Mystery of the Yeti is an accoustic journey, a trip, a tale, not just music.
the only thing that comes to my mind is:
Der Weltensegler - Der Weltensegler
http://www.discogs.com/Der-Weltensegler-Der-Weltensegler/release/371542
but its only something for the german speaking ppl here as there is a lot spoken there.
i can really recommend this one, totally mind-manipulating, twisted psychedelic stuff.
maybe also the track Jörg On Mushroom - The Messenger
http://www.discogs.com/Shidapu-Feat-SST--J%C3%B6rg-On-Mushroom-Easy-Going-The-Messenger/release/38663
for me its an accoustic version of a mushroom trip.
best track ever
maybe also:
The Mystery Of The Thirteen Crystal Skulls
and
The Secret Of The Thirteen Crystal Skulls