A half-hour drive from Salālah, Al-Mughsail Beach boasts six uninterrupted kilometers (four miles) of white sand, complete with picnic shelters and frankincense trees. Take a dip in the impossibly clear turquoise waters, or watch fisherfolk pilot traditional dhows offshore. A walk through Al-Marnif Cave leads to Al-Mughsail’s famous blowholes at the beach’s west end. Every couple of minutes, the ground shakes and small holes in the rock erupt with deafening noise and dramatic jets of seawater.