Guelta Zemmur (Berber: Geltat Zemmur, meaning: "olive tree pool") is a small town or village in the Moroccan-administered territory of Western Sahara.The town is based around a guelta pool or oasis, retaining rain water for long periods. It was a camp site for the Moroccan Sahrawi nomads of the area for hundreds of years.It functioned as one of the most important military strongholds for the indigenous Polisario Front guerrilla after the retreat of Spain from what was then Spanish Sahara.