Montigny-l'Allier is a commune in the Aisne department in Picardie in northern France .
It is found in the region Picardie in the Aisne department in the north of France .
It is found in the region Picardie in the Aisne department in the north of France .
使用更简单的措辞: Montigny-l'Allier is a commune in the Aisne department in Picardie in northern France . 输出: