The cable car installation was made in the 1950s by Bronson Hartley who lived on the island for some years with his wife and children .
Bronson Hartley is a well - known naturalist and promoter of helmet diving .
The cable car installation was made in the 1950s by Bronson Hartley , a well - known naturalist and promoter of helmet diving , who lived on the island for some years with his wife and children .