The rehabilitation of the volcanic natural cave that constitute "Los Jameos del Agua" Auditorium, was a challenge in the development of new technologies, materials and even machinery, specifically designed for strengthening and conditioning this impressive natural area. As a consequence that this is the biggest natural Auditorium in Europe, and a specially protected space, both, the project and its execution have required to contemplate the double condition of securing more than 800,000 people who use it every year, while maintaining the original aesthetics.

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