After barreling into the archipelago at 200 kilometers per hour (125 mph), Cyclone Chido left behind scenes of desolation: Trees mowed down as far as the eye can see, sturdy tree trunks blown apart as if struck by mortars, the previous green of the foliage replaced by a sad brown.

"It's an environmental disaster," said Raima Fadul, a biologist. "There are no more trees. Those still standing have lost their tops... The cyclone flattened the vegetation."

A gigantic baobab over 300 years old collapsed onto a restaurant. Part of the mangrove is now completely bare and black. A three-meter (10-feet) earth mound looms where an acacia tree, half a century old, was uprooted by the violent storm.

One effect of the vegetation's sudden disappearance is that Mayotte's slums, formerly hidden by lush greenery, are now starkly apparent, making visible their number, and their sprawl.

'We never realized'

"All we saw before were mango trees, coconut trees and a forest," said Rouchdat Mourchidi, an education counselor checking on what remains of a family plot on the island's heights. "We never realized there were metal shacks there because they were hidden in vegetation."

Trees have always played the crucial role of channeling rain and slowing down potential floods. Now that they are gone, any torrential downpour will wash soil into the lagoon below, covering the seabed in mud.