Austrian police say around 7,000 people gathered at the border after Slovenia transported many refugees by train.
Al Jazeera’s first report from the field using social media platform SnapChat is taking place today on the Greek island of Lesbos.
Senior correspondent Mohammed Jamjoom is covering the refugee crisis and taking viewers directly to the island’s north, where the majority of refugees are arriving.
Followers are encouraged to submit their questions via direct message using the app and Jamjoom will address them as time permits.
To follow his coverage, add ajenews on SnapChat.