Boulder Adventures, Llanberis offers outdoor activities and accommodation in Snowdonia, North Wales.
Nestled in the foothills of Snowdonia, the Centre for Alternative Technology (CAT) is a world-renowned eco centre that researches and supports greener ways of living.
Probably built by Llywelyn ab Iorwerth ('the Great') early in the thirteenth century, the castle is dominated by a massive round-towered keep, still standing up to 50 feet (15.2m) high.
Please note that Electric Mountain is temporarily closed for refurbishment and upgrading. We hope to be back in the new and improved Visitor Centre by 2020.