A 4 to 5-hour tour in Milos Island allows for a more comprehensive exploration of its attractions and offers enough time to visit multiple sites. Here's a suggested itinerary for a longer tour:

• Sarakiniko Beach (1 hour): Start your tour by visiting Sarakiniko Beach, famous for its stunning lunar landscape. Take your time to explore the unique rock formations, swim in the turquoise waters, and capture memorable photos.
• Plaka and Kastro (1.5 hours): Head to the charming village of Plaka, the capital of Milos. Wander through its narrow streets, visit the Panagia Korfiatissa Church, and enjoy panoramic views of the island from the Kastro (castle) area. Take a break at one of the local tavernas for a traditional Greek meal.
• Catacombs of Milos (30 minutes): Drive to the Catacombs of Milos, an ancient Christian burial site. Explore the underground tunnels and learn about the island's religious history.
• Adamas (1 hour): Proceed to Adamas, the main port town of Milos. Take a leisurely stroll along the harbor promenade, visit local shops, and relax at a café. If time permits, you can visit the Milos Mining Museum or take a short boat tour to nearby sea caves.
• Optional: Beach Visit or Additional Site (1 hour): If you're interested in spending some time at the beach, consider visiting a nearby option like Paliochori Beach, Tsigrado Beach, or Firiplaka Beach. Alternatively, you can use this hour to explore another notable site, such as the ancient theater of Milos or the fishing village of Klima.

Remember to adjust the timing based on your preferences and allocate additional time for transportation between the sites. It's also a good idea to check the opening hours of attractions in advance and plan accordingly. Enjoy your extended tour in Milos Island!