When rewilding isn't mad - guanacos can transform the espinal of Chile Meredith Root-Bernstein | 27th March 2014 The degraded Mediterranean-like savannas of Central Chile are in serious need of re-wilding, writes Meredith Root-Bernstein. And that means bringing back the guanaco, hunted out 500 years ago, to browse on the thorny acacia scrub.