ArtStation - Green Hill Zone - Animated Background

Green Hill Zone Act 2 Background Loop

Green hill zone background by sonicmechaomega999 on DeviantArt

Green Hill Background by FrostTheHobidon on DeviantArt

Steam Workshop::Green Hill Zone (Sonic Generations) - Scenery

Custom / Edited - Sonic the Hedgehog Customs - Green Hill Zone Background (Modern, Genesis-Style) - The Spriters Resource

ArtStation - Sonic the Hedgehog Diorama Series: Green Hill Zone

Green Hill Zone 3D by AlphaRox on DeviantArt

ArtStation - Green Hill Zone

Sonic 1: Green Hill (Past) Background by MTBVCDRemixes on DeviantArt

Green Hill Zone by StarShiney-Chan on DeviantArt