Among his myriad projects, Cueva de los Verdes, in the island’s north, is the largest. A gargantuan tubular cave, it was created 3,000 years ago by a torrent of gushing lava, its top later ...

Embark on a scenic tropical forest hike in Hawaii to see lava tubes and stunning flora and fauna, including some threatened ...

The island of Gorée lies off the coast of Senegal, opposite Dakar. From the 15th to the 19th century, it was the largest slave-trading centre on the African coast. Ruled in succession by the ...