According to The Sunday Times (21 February 1993), modern explorers are running out of things to explore:
"Sir Ranulph Fiennes, five stone lighter and likely to lose at least one more frost-bitten toe after completing the first Antarctic crossing on foot, did it to pay his bills. Robert Swan, the first man to walk to both north and south poles, thought it would impress women at parties. For Chris Bonington, it was simply the challenge that led him to climb every mountain from the Eiger to Everest."
"But where will the great adventurers of our time seek their livelihood, anecdotes and fulfilment in a world where the highest peaks have been scaled, the seas sailed and the Sahara desert crossed by a couple on a tandem?"
"The whole world has been photographed by satellite so how can you explore anything any more? There is nothing scientifically left to do. The only things left now are stunts rather than exploration. We can only strive to do it better or differently."
But the article continues:
"The glory explorers once commanded is now coveted by one of the few groups genuinely going where no man has gone before: cavers. Dick Willis, who discovered a huge chamber in Borneo last year, praised Fiennes's achievement but added pointedly that he wouldn't describe it as exploration."