1. Nisyros Volcano, also known as Nisiros, is a volcanic island located in the Aegean Sea near the island of Rhodes in Greece. It is a relatively small island, measuring only about 40 square kilometers in size. The volcano itself is the main attraction of the island, as it is an active volcano and one of the few in Greece that visitors can access.

The volcano of Nisyros is characterized by its impressive crater called Stefanos. This crater is one of the largest and most well-preserved hydrothermal craters in the world. It has a diameter of about 300 meters and is filled with yellow sulfur crystals and boiling mud pits. Visitors can walk along the rim of the crater and witness the volcanic activity up close.

Aside from the volcano, Nisyros also offers stunning views of its rugged landscapes, traditional Greek villages, and beautiful beaches. The island has a unique charm, with its whitewashed houses, narrow alleys, and traditional taverns serving delicious local cuisine.

2. The working time and contact information for Nisyros Volcano may vary depending on the season and current conditions. It is recommended to check with local authorities or travel agencies for the most up-to-date information. There may not be a specific phone number available for Nisyros Volcano, but visitors can contact the local tourism office in Rhodes or Nisyros for guidance and assistance.

3. Ticket information and transportation to Nisyros Volcano can be obtained in Rhodes. There are a few different options for reaching Nisyros from Rhodes:

- Ferry: Visitors can take a ferry from the port of Rhodes to the port of Mandraki in Nisyros. The ferries typically depart daily, with varying schedules depending on the season. The ferry ride takes about 3-4 hours.

- Day trips: Some tour operators in Rhodes offer organized day trips to Nisyros Volcano. These tours usually include transportation to and from Nisyros, a guided visit to the volcano, and some free time to explore the island.

- Independent travel: For those who prefer to explore on their own, it is possible to rent a car or scooter in Rhodes and take the ferry to Nisyros. Once on the island, there are local buses and taxis available for transportation to the volcano.