Need light suggestions for caving video's

My modded apex is great. I changed out all 5 bulbs and its bright as hell, but it just isn't enough for caving video's. The cave's I am in are generally covered in dark brown/black walls, and really soak up the light. I need ideas on what I can use that doesn't weigh 100 pounds that lasts a while, and will really throw out some light. If I were able to shoot 10-30 minutes of video per trip in big passages 40-50 feet high or bigger, i would be happy. I realize something that really throws a ton of light probably wont last forever. I just don't want something huge and bulky. What are my options and costs I am looking at?

Im not talking about production value video's either, I am simply talking about shooting clips to document some of the passages (for the older guys who cant make the brutal 20 minute belly crawl) etc.

hey chad you might want to post your question here, http://www.candlepowerforums.com/vb/forumdisplay.php?f=6

well im not really interested in another head lamp. I already have 3 apex's that i use for caving.

Well an 18650 powered mc-e or p7 might fit the bill.

Like sol-leks said a Cree MC-E or a SSC P7 should work nicely. A couple of choices I've been pondering are the Fenix TK40 and the Eagletac M2C. They are both very bright lights that should work nicely for your purpose.

Do you have links to those lights as to where they can be bought, how bright they are, weight, duration, etc?

The TK40 from 4Sevens link https://www.4sevens.com/product_info.php?cPath=22_85&products_id=696

The Eagletac lights M2 with the P7 https://www.eagletac-store.com/product_info.php?cPath=103&products_id=1470
and the M2X with 3 Cree R2's https://www.eagletac-store.com/product_info.php?cPath=103&products_id=1471

The current TK40 is a Cree MC-E K bin rated at 630 Lumens a new version should be out soon the M bin rated at 730 Lumens weight is about a pound and can run 630 Lumens for an hour on 8 AA batteries it also has lower levels for closer in task ie 13 Lumens for 130 hours good for in a tent camping or whatever.

The Eagletac lights are rated at 900 Lumens for 1.2 hours with 4 CR123 and 1.5 hour with 1 18650 rechargeable it also has several lower levels for longer run times and versatility. I think about the same weight.

Both lights are priced about the same the links I put up are reputalbe dealers that will stand behind there product. You can search for better prices but I dont think you will get better service.

Is it a safe assumption, that between the TK40 and the eagletac lights, they throw out a massive wall of light, which would light up a large cave nicely for point and shoot video?

My bad chad when you said caving I just assumed head lamp. Sorry about that.