Does living with a tribe, Bruce Parry style, place isolated cultures at risk from pressure to change? Jonny Bealby looks at the rise in 'wild' tourism

Running an adventure travel company is becoming increasingly complex. With competitors constantly pushing the boundaries of alternative holidays - swimming with sharks, firing AK47s, driving packs of huskies - I am constantly forced to unearth new products for evermore discerning clients. Thankfully "gimmick" holidays are not really our style, but off-the-beaten-track adventures most certainly are, and even here things are being squeezed.

As a third series of Tribe gets underway, Bruce Parry and his crew describe their personal highlights from their latest extreme adventures, and we tell you how to have a similar experience - without the whipping or frog poisoning