Green Hill

Green Hill, originally named Green Hill Zone, is a recurring location in the  series. A lush, green paradise in South Island, it was the start of Sonic's adventure in his fight against Dr. Robotnik in .

Setting
Green Hill is a lush area of South Island, with rolling green hills and rushing rivers and waterfalls. The area is home to various animals, has tall palm trees and yellow flowers, and caves beneath.

Sonic the Hedgehog (1991)
Sonic begins his chase of Dr. Robotnik in Green Hill, where the doctor has unleashed his badniks. He passes through large shuttle loops and tunnels, being careful of spikes and collapsing areas. He eventually confronts the doctor in his Egg Mobile-H

After Sonic defeats Dr. Robotnik, Sonic returns to Green Hill with the chaos emeralds, which he had collected. The emeralds flash before him and disappear, leaving Green Hill full of blooming flowers and Sonic the victor.