An American researcher who fell ill almost 1,000 meters below the entrance of a cave in Turkiye, has recovered sufficiently enough to be extracted in an operation that could last three or four days, a Turkish official was quoted as saying on Friday.

An American researcher who fell ill almost 1,000 meters below the entrance of a cave in Turkiye, has recovered sufficiently enough to be extracted in an operation that could last three or four days, a Turkish official was quoted as saying on Friday.