Butterflies Valley, or Petaloudes, is a shaded nature reserve in western Rhodes, near Epano Kalamonas. Streams, ponds, small waterfalls and paths through Oriental sweetgum trees make the walk worthwhile even when the butterflies are away. From June to September, Jersey tiger moths gather on tree trunks and rocks to rest and breed, with the largest numbers often seen in August. The uphill route reaches the Monastery of Panagia Kalopetra, where you can look out across Rhodes. Wear shoes suited to uneven, hilly paths.
A summer refuge for Jersey tiger moths
Petaloudes, the Greek name for Butterflies Valley, is a protected natural area in western Rhodes. Its Oriental sweetgum trees provide a rare habitat: the valley contains Europe’s only natural forest of this tree. The resin’s scent draws Jersey tiger moths to the area during the warmer months.
From June to September, the moths gather in large numbers to rest and breed. They settle on tree trunks, rocks and leaves, often blending into the surroundings. Look carefully as you walk; they can be easy to miss at first. The moths are nocturnal, so many rest during the day.
Following the valley path
The route passes through dense vegetation alongside streams, ponds and small waterfalls. Bridges and paved or cobbled sections carry the trail across the water and through the trees. The shaded setting offers a cooler walk on hot days, and the valley remains worth exploring outside the moth season for its greenery and flowing water.
The route from the northern entrance, where the Natural History Museum is located, climbs from about 150 metres in elevation to the Monastery of Panagia Kalopetra at about 470 metres. The path is around 1,300 metres long, and visitors also describe the walk as hilly. Allow time for the climb and the return, especially if you plan to pause along the way.
The museum and the monastery
The Natural History Museum stands by the lower entrance. It is housed in a restored Italian-era building from the 1930s and covers the reserve’s plants and wildlife. Its exhibits include a hatchery where butterflies breed in a protected setting.
At the upper end of the trail, the Monastery of Panagia Kalopetra overlooks the valley and offers views across Rhodes. The monastery gives the uphill walk a clear destination; the route itself is also a way to see the streams, ponds and tree cover that make the reserve appealing beyond the summer gathering.
Häufige Fragen
When can you see butterflies in Butterflies Valley?
Jersey tiger moths gather in the valley from June to September. August is often a particularly busy time for them.
How long does a visit take?
Allow about 1.5 to 2 hours for the walk, including the uphill route and return.
Is the walk steep?
The path climbs uphill to the Monastery of Panagia Kalopetra and includes hilly, uneven sections. Comfortable shoes are advisable.
Can you visit outside butterfly season?
Yes. The shaded trail, streams, ponds and small waterfalls can still make for a pleasant walk when the moths are not gathered in the valley.
