Explore the unspoilt coastline of Mazarrón on the stretch leading from Bolnuevo towards the south-west This popular hiking route takes walkers on a trip along the southern side of the mountains of Sierra de Las Moreras in Mazarrón, leading to Cala Leño via the Rambla de la Paridera. From there, the route follows the unspoilt coastline to others of the coves of Bolnuevo including Cala de la Grúa, Cala Amarilla and Cala Cueva de Lobos, eventually..