Cape Verde's government announced two days of mourning on Sunday after 25 people, mostly children and teenagers, were killed in a bus crash.
The west African country's leaders joined a Mass on Sunday at a local church on the island of Fogo, where 18 coffins were on display.
Such accidents are rare in the Atlantic archipelago, where roads are generally in good condition.
Officials said the bus veered off the road and plunged into a deep ravine late on Saturday, following an excursion to a village inside a volcanic crater.
The dead included the bus driver, who organized the excursion every year as a present for the pupils he drove to school during term time.
Prime Minister Francisco Carvalho told public television station TCV he had ordered two days of mourning and promised further measures would be taken.
President Jose Maria Neves, meanwhile, said he would order an inquiry into the circumstances of the accident.
"Right now the priority is to show solidarity with the families of the victims," AFP quoted him as saying.
Emergency personnel worked through the night to rescue victims trapped in the wreckage, in a remote, rocky valley.
Seven victims were buried early on Sunday. The rest were set to be buried later in the day, according to public radio network RCV.
Dionisio Semedo, a doctor at the regional hospital on Fogo, told public TV that 12 people were still receiving treatment, two of whom were in serious condition.
He said bodies and injured people began arriving at the hospital on Saturday night, between 11:00 pm and midnight.
