1. Can Marca Caves is a popular tourist attraction in Ibiza located in the port town of Puerto de San Miguel. The caves are ancient and have been formed over thousands of years with stunning rock formations and underground lakes. Inside the caves, there are many impressive stalactites and stalagmites, and a beautiful underground waterfall that attracts visitors. The caves were once used by smugglers to hide their contraband goods as they made their way from North Africa to mainland Spain. In the 20th century, the caves were discovered by tourists and are now open to the public.

2. Can Marca Caves are open daily from 10:00 am to 7:30 pm from April to October. The phone number for inquiries is +34 971 334 776.

3. The admission fee for the Can Marca Caves is €10 for adults and €6 for children aged 6-12. Children under 6 are free. There are frequent buses from Ibiza town to Puerto de San Miguel, and the journey takes approximately 30 minutes. There are also several taxi services available. It is recommended to wear comfortable shoes for the tour as it involves walking on uneven surfaces and descending several stairs.