 Pedzisa mutsara unotevera: Mackintosh akatanga kuenda kuAntarctic ari mutevedzeri womukuru mukuru paShackletonRwendo rwaNimrodhi, 19071909. Achangosvika muAntarctic, tsaona yakaitika mungarava yakaparadza ziso rake rokurudyi, uye akadzorerwa kuNew Zealand. Akadzoka muna 1909 kuzopinda mumatanho okupedzisira erwendo rwacho; kuda kwake uye kutsunga mukutambudzika kwakaorora Shackleton, ndokutungamirira kugadzwa kwake muboka reRoss Sea muna 1914. 