Nimara Cave is a natural and archaeological site located on Heaven Island (Cennet Adası), near the coastal city of Marmaris. It is set in a forested and rocky peninsula area that overlooks the Aegean coastline, making it both a scenic and historically significant destination. The cave is accessible via hiking trails and short boat trips from Marmaris.

The cave, known as Nimara Cave, is a large limestone formation that has been used by humans since ancient times. Archaeological findings suggest it was inhabited during the Neolithic and Classical periods, with evidence of ritual use and settlement. Inside, the cave features spacious chambers, rock formations, and a cool natural environment that contrasts with the warm coastal climate outside.

What makes Nimara Cave particularly notable is its blend of natural beauty and ancient history in a relatively untouched setting. Surrounded by pine forests and coastal views, it offers visitors both a light hiking experience and a glimpse into early human activity in the region. Its combination of mythology, archaeology, and landscape makes it one of the more unique natural attractions around Marmaris.