The Aille River has its source in Sliabh Elva Mountain in the Burren

The Burren

The Burren is a karst-landscape region or alvar in northwest County Clare, in Ireland. It is one of the largest karst landscapes in Europe. The region measures approximately 250 square kilometres and is enclosed roughly within the circle made by the villages Ballyvaughan, Kinvara, Tubber, Corofin,...

. It flows through the famous spa

Spa

The term spa is associated with water treatment which is also known as balneotherapy. Spa towns or spa resorts typically offer various health treatments. The belief in the curative powers of mineral waters goes back to prehistoric times. Such practices have been popular worldwide, but are...

 town of Lisdoonvarna and onto Doolin

Doolin

Doolin is a coastal village in County Clare, Ireland, on the Atlantic coast. It borders the spa town of Lisdoonvarna. It is a noted centre of traditional Irish music, which is played nightly in its pubs, making it a popular tourist destination. There are numerous nearby archaeological sites, many...

, where it reaches the sea near the base of the Cliffs of Moher

Cliffs of Moher

The Cliffs of Moher are located in the parish of Liscannor at the south-western edge of the Burren area near Doolin, which is located in County Clare, Ireland....

. Flowing through Lisdoonvarna it gives rise to the famous Sulphur, Iron and Magnesium wells. In the summertime, the river often disappears into the limestone cave system in Doolin

Doolin

Doolin is a coastal village in County Clare, Ireland, on the Atlantic coast. It borders the spa town of Lisdoonvarna. It is a noted centre of traditional Irish music, which is played nightly in its pubs, making it a popular tourist destination. There are numerous nearby archaeological sites, many...

.