Great!
Excuse my rambing constructive critique... I try to keep it organized, but thoughts come up as a listen. Oh, and take this all with a grain of salt, if you know what i mean.
Very nice piece here, but the description is off I think. Sounds more like the sun rising over a massive enemy host charging straight at you out of the sun or sailing into the eye of a magnificent storm. Too orchestral to sound tribal, I'm afraid... I would throw in some nice tribal percussion, vocals (chanting/staccato), and redesign the buildup (it sounds like a quiet morning on the prarie at first, honestly). After that, it's great (0:41 on), but still nothing tribal about it.
It's fairly well balanced, but I think it needs some more balancing to bring out the cymbals and such. Have some low and sharp hits in line with the cymbal, and perhaps put more reverb on the cymbal (it sounds too sharp honestly; alternately use a different sound). In addition, I think some more tenor drums would improve the piece greatly if you are indeed going for a tribal feel (if you have the EWQL packs, consider opening up RA and Stormdrum and seeing what the VIs within can do for you). At 0:41, you just have drum hits echoing the main line, which is okay, but seems muddled with all the hits.
As a piece of music in general, I think a lot can be done to it in general. A celesta or glockenspiel part to the start gives a great mysterious feel, as well as a high harmonic of the tonic on violin or a very deep variation of the tonic on double bass. Some timpani rolls lend themselves to this kind of music, but I would caution you to be careful with that running into the existent drum parts. You really under-utilize woodwinds (like me). Clarinets in their lower range offer a great mysterious feel, so do flutes in their lower area. Oboes sound great with calm/mysterious stuff. Your beginning is calm and all with that, but not myserious (hence the suggestion of the celesta/glock part there).
The high marcato strings might sound better as pizzicato or having the last interval a nice glissando. A lot of it almost sounds MIDI it's so stuccato and without feeling. Just changing the opening phrase (eighth-eighth-eightrest-eight-eight-
eight, I think?) to have a bit more phrasing (legato on the first, stuccato, stuccato, legato, stuccato or more to that effect) would certainly liven it up.
I also think the horns could use some work. If this were an army of natives and a dismal flight, there should be lots of glissandos and what not. I would personally drop an octave (you may not even have to do that with some of it) and have it on trombone, but you might hit your bass drums there. I would then have the violins echo that phrase at 1:09 and let the trombones/horns rest there.
I think you might want to listen to some of the score to Stardust by Ilian Eskeri. He does a great job with mixing tribal-esque with traditional orchestral and contemporary cinematic.
All in all, a very nice piece of orchestral-cinematic. I just think it could do with some more work and a different title. ;)
Keep up the awesome stuff, LD!
-Samulis