All these families they have to scoop up their children and run before getting caught in the crossfires between Yemen's warring sides. The Al-Zor camp where they had been living for four years is no longer safe with the Iran-backed Huothis drawing nearer in a major offensive against the northern city of Marib and its nearby oil fields.
Around 140 sites have sprung up in the region to provide basic shelter for the displaced, who number up to one million according to some estimates.
Al-Zor is among a cluster of 14 displacement sites in Marib's Sirwah district - a flashpoint area on the road to the rebel-held capital Sanaa.
All the camps could be forced to empty as the Houthis intensify their campaign for the province, a huge prize that would consolidate their control of the north and give them possession of Yemen's richest oil and gas fields.
Until early last year, life in Marib was relatively peaceful despite the civil war that erupted in 2014.
But as the front lines shift, and air raids by Saudi Arabia and its allies pound the area, there is new peril for civilians, whether they are in dismal camps, lodging with relatives, or sheltering at other informal sites including abandoned buildings.
The fighting shows no signs of abating despite heavy losses on both sides.
The United Nations warned last week of a potential humanitarian disaster if the fight for Marib continues, saying it has put "millions of civilians at risk".
Yemen is already enduring what the UN says is the world's worst humanitarian crisis, with famine again stalking the country.
