yaks caravan loaded with big blue barrels is crossing river, woman yak herder is guiding them, nepal

4620 altitude animal barrels base big blue camp caravan cargo carry crossing dughla everest expedition extreme guiding hard heavy herder high hiking himalaya himalayan himalayas load loaded luggage mountain national nature nepal nepalese park path people river sagarmatha solukhumbu stone stream them third throwing traditional trail transport transportation travel trek trekking walking woman work world yak yaks