Nisyros Volcano Tour from Kos: Walk the Crater Floor
Walk inside an active volcano crater and stand on ground that rumbles beneath you
A full-day tour from Kos to Nisyros, the volcano island in the Dodecanese, includes ferry passage, bus transport to the crater, and a guided walk across the volcanic floor. The volcano is Greece's youngest and still active; the largest crater, Polivotis, measures 260 meters across and 30 meters deep. Hotel pickup is included; the guide speaks English and German. Lunch and entrance fees are optional at checkout.
Step-by-step itinerary
Explore Nisyros Volcano and Mandraki
- Leave port of Kardamena
- Cruise past Giali Island to Nisyros
- Take bus to volcano crater
- Explore Nisyros volcano crater
- Return to Nisyros port
- Walk through Mandraki town
- Visit Panagia Spiliani monastery
- Lunch or shopping in Mandraki
- Board boat at 4:00pm for Kos
The Experience
The day starts with pickup from your hotel and transport to Kardamena port, where you board a ferry for the one-hour crossing to Nisyros. A bus meets you at the island's port and carries you inland to the volcano crater. The Polivotis crater—the largest on the island—opens before you with a diameter of 260 meters and walls dropping 30 meters down. You walk across the crater floor itself, where the ground beneath your feet is volcanic rock and mud formed by eruptions estimated around 25,000 years ago. The rocks underfoot are basalt and pyroclastic deposits; the air carries the mineral presence of an active volcano.
Nisyros is one of four active volcanoes in the Greek islands, alongside sites on Methana, Milos and Santorini. The island itself is mountainous and volcanic, its buildings constructed from the same rock formations—basalt and volcanic stone—that make up the crater walls and the valley floor. The valley surrounding the volcano stretches 2,400 meters long and 950 meters wide; five craters dot the region, with Stefanos crater measuring 30 meters across. Your guide, speaking English or German, walks you through the geology and the volcanic history as you move across the floor.
The return to Nisyros port leaves time to walk the narrow streets of Mandraki, the island's main town, with its blue and white painted houses. You can visit the Panagia Spiliani monastery, browse local shops, or sit for lunch before the 4:00pm ferry departure back to Kos. The full day runs eight hours from pickup to return.
What’s included
- Hotel pickup and return transport.
- one-hour ferry crossing to Nisyros.
- bus transport from the port to the volcano crater.
- guided walk across the crater floor with a live guide in English or German.
- return ferry to Kos at 4:00pm.
Operated by Aegeas Travel
Is this one for you?Book this if you're based in Kos without a car—hotel pickup, ferry, and crater transport are coordinated as one sequence, so you move directly from accommodation to volcano without managing separate bookings.
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What is the Polivotis crater like when you walk inside it?
Polivotis is the largest crater on Nisyros, measuring 260 meters across and 30 meters deep. You walk on the crater floor itself—volcanic rock, basalt and pyroclastic mud formed by eruptions thousands of years ago. The ground beneath your feet is the volcano itself.
How do I get from Kos to Nisyros on this tour?
Hotel pickup is included; you're transported to Kardamena port on Kos, then take a one-hour ferry crossing to Nisyros. A bus meets you at the island port and takes you to the crater.
Is the volcano still active, and is it safe to walk inside the crater?
Nisyros is Greece's youngest active volcano, one of four active volcanic sites in the Greek islands. The tour is designed for all fitness levels, though the walk across the crater floor involves uneven volcanic terrain and exposure to sun, so comfortable shoes and sunscreen are essential.
What language does the guide speak?
The guide speaks English and German throughout the tour.
What time does the ferry leave Nisyros to return to Kos?
The return ferry departs at 4:00pm, giving you time to explore Mandraki town, visit the Panagia Spiliani monastery, or have lunch before boarding.
Does the tour price include lunch and the volcano entrance fee?
Hotel pickup, ferry transport, bus to the crater and the guide are included. Lunch is not included and can be arranged in Mandraki. The volcano entrance fee is optional and selected at checkout.
Nisyros Volcano Tour from Kos: Walk the Crater Floor
8h · EN · DE · at your hotel
from € 30 per person
★★★★★★★★★★4.50537 reviews












