A massive caravan consisting of thousands of migrants making its way to the U.S.-Mexico border will soon be joined by hundreds more who left the southern Mexican city of Tapachula on Sunday.

Reuters reported that the larger caravan, consisting of a reported 7,000 people, is currently stopped just north of Tapachula in the town Huixtla. The group left from Tapachula six days ago and will be joined by the smaller group of what is estimated to consist of “hundreds” of more migrants.

Most of the migrants hail from Cuba, El Salvador, Guatemala, Haiti, Honduras and Venezuela.