what mistake did lidenbroke make ?

Ali has............................. some swimming

done --- gone

what mistake did lidenbroke make ?
he left axel behind him and before this when he wwnt to the eastern path he knew the path was going up not down and he saw the remains of animals then he wanted to continue the path

Is this correct or no

please enter the teachers to make sure of the answer

He took the eastern path without without hesitating and insisted on completing it till the end although he knew that it was the wrong path .
Mr Muhamed Ouf
Beni Suef
0103855658