It's raining on the camp, and water is seeping into the unheated tents.

Women use long brooms to try to sweep muddy water out from in between their shelters. They stack up foam sleeping pads and roll up blankets, in a vain attempt to keep them from getting soaked. When artillery rumbles in the distance, the camp's residents don't even flinch.

Like so many of the other children here, 9-year-old Mohammed Hoot is wandering around the camp, bored. To keep his head dry, Mohammed wears an oversized leather jacket over his head. Inside a pair of plastic sandals, his feet are bare, unprotected from the puddles and plummeting temperatures.

"We've been living here for a month ... it's too small, it's not big enough for us," the surprisingly vocal little boy says, pointing at the tent where he and nine other family members sleep at night.

Hoot's family fled fighting in Aleppo, Syria's largest city, like many of the more than 6,000 people living in this rain-soaked camp, erected in a border customs compound on the Syrian side of the border with Turkey.

"We want to enter Turkey ... they are not letting us in," says Hoot.

The Turkish government says it no longer has room to house displaced Syrians in the 14 refugee camps it is currently operating on Turkish soil.

Unsafe in Syria, unwanted in Turkey, these people are living in limbo. They are but a fraction of the legions of Syrians made homeless by the war.

According to the United Nations' admittedly conservative estimates, the conflict has pushed close to two million Syrians out of their homes. In other words, roughly one in 10 Syrians is now living on the run.

The U.N. says some 1.2 million Syrians are displaced inside Syria. Meanwhile, more than half a million Syrians have registered with the United Nations High Commissioner for Refugees after fleeing across borders. And there are more coming every day.

"Since the beginning of November, the number of registered refugees region-wide has risen by about 3,200 a day," the UNHCR announced this week.

Agency officials estimate there are hundreds of thousands of additional Syrian refugees who have not registered with local authorities in Turkey, Lebanon, Jordan and Egypt, because they are surviving off of their savings or the hospitality of friends and relatives. But after more than 20 months of conflict, there are signs that resources for wealthier refugees are running out.

"A lot of the increase is from people who are in neighboring countries but they've run out of everything," said Ron Redmond, a UNHCR spokesman in Beirut.

"Some of them have already been displaced internally for weeks and months moving from place to place and they are now coming out. And some of them are in a weakened state and the cold weather is certainly a danger to them, especially the children," Redmond added.

"And these are people who lived a good life at one time. They had nice homes, they had good apartments, they had cars."

As Syrian refugees go, Ali Moraly knows he is one of the luckier ones.

After he ran away from Syria three months ago, Moraly had enough money and connections to rent a small one-room apartment in Istanbul, where he practices his violin daily.

"I feel so much ashamed of myself, being in a warm place and having my violin with me and playing music while people have to stand in long queues in order to have something to eat," he says.

Insecurity and a feeling of hopelessness drove him to pack his bags and leave his home and parents in Damascus, possibly forever.

"I used to practice the violin while hearing gunshots just go by my window," Moraly recalls.