Between late June and August, a narrow wooded valley in the interior of Paros becomes home to one of the most remarkable natural spectacles in the Greek islands. Thousands of Jersey Tiger Moths — called "butterflies" by locals, though they are technically moths — gather in the trees and rocks of the Petaloudes valley, covering the bark with their wings folded, creating a living tapestry of black and cream that seems to pulse and shift as you move through it.
What You'll See
The moth in question is Euplagia quadripunctaria — the Jersey Tiger. At rest, its wings are a striking black and cream pattern; in flight, they flash vivid red and black. The moths gather here not to feed but to rest during the hottest weeks of summer, sheltering in the cool, humid microclimate created by the valley's stream and dense plane trees. They do not eat during this period: they have stored enough energy during their larval stage to survive the summer.
Walking through the valley at peak season — mid-July through August — feels almost dreamlike. The moths are everywhere: on the bark of plane trees, on the rocks beside the stream, on the leaves above your head. They are not disturbed by slow, quiet movement, and you can stand very close to examine the extraordinary detail of their markings.
Getting There
The Valley of Butterflies (Petaloudes) is located near the village of Psychopiana, roughly 8km southeast of Parikia in the interior of Paros. By scooter from Parikia it takes about 20 minutes. The road climbs gently inland and the approach to the valley is well-signposted. There is a small car park and a modest entrance fee (around €3). A path follows the stream through the valley for about 800 metres, passing several picnic areas and viewpoints. The walk is easy and suitable for children.
When to Visit
The moths are present in the valley from approximately mid-June through the end of August. Numbers peak in July. Outside these months — before mid-June or after September — the valley is pleasant to walk through but the moths will not be present. Early morning or early evening visits are best: the light through the trees is beautiful, and the moths are more active in cooler temperatures, sometimes taking flight in small clouds around the warmest parts of the day.
Signs at the entrance ask visitors not to make sudden loud noises or clap their hands. Startling the moths into sudden flight depletes the energy reserves they need to survive the summer and reproduce. Please respect this — it's a small ask for a significant reason. The valley is at its best when it's quiet anyway. Keep voices low, move slowly, and you'll have an experience that is genuinely memorable.
Combine a visit to Petaloudes with a stop at Lefkes, just 5km north — the drive through the marble-quarry hills between the two is one of the most beautiful on the island. Or pair it with a swim at Golden Beach (another 10km east), and you have a full day out in the southern interior of Paros.