There isn't a single mountain specifically in Aberystwyth town itself. However, there are several prominent mountains in the surrounding area, including:

* Plynlimon: The highest peak in Wales, located about 20 miles east of Aberystwyth.

* Cader Idris: A majestic mountain about 20 miles north of Aberystwyth.

* Rheidol Fawr: This mountain is located near the village of Pontrhydfendigaid, which is about 10 miles west of Aberystwyth.

* Craig Goch: A prominent peak located within the Cambrian Mountains National Park, about 10 miles north of Aberystwyth.

It's important to note that Aberystwyth is a coastal town, so the surrounding landscape is more characterized by hills and valleys rather than towering mountains.