Change: travel — which once meant little more than a fully escorted luxury trip to an exotic destination — now requires training, gear and guts. Caving, round-the-world sailing, coasteering, squid diving and African bush skills camp are five ways to push the envelope. THE DESCENTThe DescentEver since   View changes from previous version. (Word count: 1626)

Change: After two hours of exploring a magical environment that feels like something straight out of Lord of the Rings, I get to emerge from the   View changes from previous version. (Word count: 1620)