A few days after the Beirut disaster, hundreds of volunteers diligently climbed up the chipped stairs, stepping through the rubble with brooms and shovels.

They went to shattered, abandoned houses in the aftermath of an explosion in the Lebanese capital on August 4, cleaning blood stains from walls, sweeping broken glass and tidying doors and windows.

"There are blood stains in the shape of hands and feet on the stairs, and there are also bloodstains on the hands and feet of children," said Marwan, 33.

Usually, volunteers do the cleaning when apartment owners aren't home yet.

Hundreds, if not thousands, of volunteers poured down the streets of Beirut last week, some from other towns, and some from other countries such as the US or France.

Volunteers focus primarily on cleaning at Gemmayze and Mar Mikhael, known for its bustling bars and crowded restaurants.

Now, the sidewalks of the streets are covered with broken glass and blood.

On August 10, Marwan and his friend, 29-year-old Zeina, developed a habit of searching for damaged houses.

Instead, they look for houses that still look good, and they meet with anyone and ask them if they need help.

In the house of 57-year-old Elie Chamoun, they kneel and sweep the broken glass.

Zeina and Marwan also give great support to the survivors.

Before the disaster, Zeina, the architect, and Marwan, the engineer, joined the volunteer work at Embrace, a Lebanese organization focused on mental health.

"I see many people going through terrible things. We are from the same country so we need to care about each other," she said.

Zeina says cleaning after the disaster gives her a sense of peace and serenity.

Marwan joined the volunteer work one day after the explosion.

The people Marwan and Zeina helped express their gratitude for with the small gifts they had left over, such as a small souvenir, coffee package, a little money or a bottle of water.

Volunteers who didn't clean up the wreckage delivered drinking water, coffee, masks, and sandwiches to those in need.

From the balcony to the street, people cheerfully welcome the volunteers, giving them best wishes: "God gives you health".