Thunderdome is a famous concept in hardcore
music that was mainly used for a series of parties and CD-albums. It was organized by the Dutch entertainment company ID&T. The first party was organized in 1992 and the party held in December 2012 was advertised as being the end of Thunderdome. However, after the 2012 event, the party was brought back in 2017 for the 25th anniversary with a 2019 edition announced the following year
Thunderdome Wikipedia