[superhuzza]

I assume he's getting water along the way and filtering it, not bringing his water for 6 days. I don't think many people hike out with almost a week's worth of water vs. finding water sources.

[chrisseaton]

Ok but it's not always possible to resupply like that, hence why someone may be carrying more.

[evilolive]

yes filtering water along the way. I doubt you can carry six days of water in an environment that's so dry you need to carry everything