(CNN) A clampdown on Syrian refugees entering Jordan has left 75,000 people stranded in the desert in a no man's land between the countries, cut off from aid for months, Amnesty International says. The rights group released satellite images Thursday that show the extent of a makeshift refugee camp in al-Rukban, an area of desert known as the berm, along Jordan's northeast border with Syria. It's also near both countries' borders with Iraq. The camp grew from 368 shelters a year ago to 8,295 this month, Amnesty said. The group also released video footage, obtained by a tribal council whose activists operate in the area, that it said showed dozens of makeshift graves of refugees who had perished amid the desperate conditions.