Within the first few steps of your 60 to 120 minute nature walk, you will marvel at the vibrant landscape. Stop and savor the spectrum of colors bursting from the gray lava rock. Then thank a consortium of conservation groups for restoring the ecosystem on Plaza Sur. In 2012, they eradicated an infestation of rodents. These non-native pests were destroying the prickly pear cactus, eating eggs and threatening the islands’ fauna such as tortoises, iguanas and seabirds. Since then, the balance of nature has been recovering into this picturesque scene.