After the eruption, people say they had to build an impromptu bridge over hot ashes to try and get the injured the help they need.
Super-heated volcanic debris swept through small communities on the volcano's flanks Sunday with little warning for residents.
Almost 200 people are missing and at least 75 have been killed since Guatemala's Fuego volcano began erupting over the weekend, officials said Tuesday. But late in the afternoon, the country's disaster agency announced it was suspending the search again because of flows of volcanic material and falling rain.
Mormon Helping Hands volunteers unload water at a collection center in Guatemala City following Sunday's eruption of a volcano, Monday, June 4, 2018.
Clouds of ash rise from the Volcan de Fuego, or Volcano of Fire, seen from the El Rodeo hamlet of Escuintla in Guatemala.
Authorities have not offered any estimate of how many people might still be missing. So far officials have identified about a third of the bodies recovered. The two volcanoes have dealt mass destruction, but are different in many other ways.
Dozens of people were seen walking along roadsides carrying children or a few belongings beside paralysed traffic in parts of Escuintla township south of the volcano.
Sunday's blast generated pyroclastic flows - fast-moving mixtures of very hot gas and volcanic matter - which descended down the slopes, engulfing communities including El Rodeo and San Miguel Los Lotes.
The institute's latest bulletin says the blowing ash could reach heights of about 20,000 feet (6,000 meters) above sea level.
About 2,500 people were in shelters in Escuintla after being forced to flee their homes in surrounding villages.
The Fuego volcano erupted yesterday, sending lahars down the side of the mountain and huge plumes of ash into the air.
Rescuers, police and journalists hurried to leave the area as a siren wailed and loudspeakers blared, "Evacuate".
Sergio Cabañas, head of the country's National Disaster Management Agency (Conred), told a local radio station that a river of lava had changed course towards the town.
People who lived in the area are now staying in temporary shelters.
The scenes of devastation were accompanied by heartbreaking stories of whole families that were devastated by the disaster - the biggest eruption from the mountain in four decades.
"This can serve as a tiny bit of consolation for the people", Diaz said.