Soldiers joined overnight rescue operations in Bronggang, nine miles (15 kilometers) from the mouth of the crater, pulling corpses from smoldering homes and streets blanketed by ash three inches (five centimeters) deep, then piling them into the backs of trucks.
Dozens of injured - clothes, blankets and even mattresses fused to their skin by the 1,400 degree Fahrenheit (750 degree Celsius) gas clouds - were carried away on stretchers.
"We're totally overwhelmed here!" said Heru Nogroho, a spokesman at the Sardjito hospital, as the number of bodies dropped off at their morgue climbed to 58 - making it the deadliest day Mount Merapi has seen in nearly 80 years - bringing the overall toll to 102.
Villager Niti Raharjo, 47, was in the hospital with burn wounds to his legs, alongside his 19-year-old son who suffered burns to his shoulder, hands and legs. Raharjo said a strong tremor woke him up and he grabbed his motorbike and the pair rode away.
"The heat surrounded us and there was white smoke everywhere," he said. "I saw people running, screaming in the dark, women so scared they fell unconscious. Everything was in turmoil while an explosion that sounded like it was from a war came along the river ... then it got worse as ash and debris rained down.
When the debris filled the road, they were thrown from the motorbike. "But fear made us get up and get out of the hell, regardless of the burning pain in our feet," he said.
Merapi's booming explosion just after midnight was six times as powerful as its initial blast on Oct. 26 and triggered a panicked evacuation. Men with ash-covered faces streamed down the scorched slopes on motorcycles, followed by truckloads of women and children, many crying.
Officials wearing facemasks barked out orders on bullhorns as rocks and debris rained from the sky.
Up until Friday, the village of Bronggang, home to around 80 families, was considered to be within the safety zone, despite signs that the notoriously unpredictable mountain could be ready to blow.
Mount Merapi, which means "Fire Mountain," has erupted many times in the last century. In 1994, over a period of several days, 60 people were killed, while in 1930, more than a dozen villages were torched, leaving up to 1,300 dead.
The greatest danger is always pyroclastic flows, like those that roared down the southern slopes just before midnight Friday at speeds of up to 60 miles per hour (100 kilometers per hour).
With many bodies found in front of houses or littering streets it appeared that many of the villagers died from the searing gas while trying to flee, said Col. Tjiptono, a deputy police chief.
Activity at the mountain forced an airport in nearby Yogyakarta to close Friday because runways were covered in heavy white ash. It was not clear when it would reopen, said Agus Andriyanto, who oversees operations.
Mount Merapi's "danger zone," meanwhile, was extended by three miles (five kilometers) to 12 miles (20 kilometers) from the crater's smoldering mouth after the new eruption, said Subandrio, a state volcanologist.
Even scientists from Merapi's monitoring station were told they had to pack up and move down the mountain. They were scrambling to repair four of their five seismographs destroyed by the heavy soot showers.
Despite earlier predictions that dozens of big explosions that followed Merapi's initial Oct. 26 blast would ease pressure building up behind a magma dome, eruptions have been intensifying, baffling experts who have long monitored Merapi.
"I don't want to speculate if there's going to be a bigger eruption," said Syamsu Rizal, a state expert on volcanos. "But there's no indication at stage that we're going to see it see quiet down at all in the near future."
More than 75,000 people living along Merapi's fertile slopes have been evacuated to crowded emergency shelters, many by force, in the last week. Some return to their villages during lulls in activity, however, to tend to their livestock.
Before Friday, the death toll from Merapi stood at 44, with most of the victims in the first, Oct. 26 blast.
Indonesia, a vast archipelago of 235 million people, is prone to earthquakes and volcanos because it sits along the Pacific "Ring of Fire," a horseshoe-shaped string of faults that lines the Pacific Ocean.
The volcano's initial blast occurred less than 24 hours after a towering tsunami slammed into the remote Mentawai islands on the western end of the country, sweeping entire villages to sea and killing at least 428 people.
There, too, thousands of people were displaced, many living in government camps.
This program aired on November 5, 2010. The audio for this program is not available.