Cuba oil: Offshore exploration brings hopes and fears
Some 50km (31 miles) off the northern coast of Cuba workers have begun drilling deep beneath the waves, exploring for oil reserves that could transform the island's future.
The Scarabeo 9 oil rig had to be brought half way around the world to bypass the five-decade-long US trade embargo on Cuba.
After a slow trek b sea from China, it finally arrived in the region last week: a faint hulk on the horizon, shrouded in mist, as it passed Havana's waterfront, the Malecon.
This is a key moment for Cuba.