12 August 1522,
The Castilians exploded and destroyed the castle of Amaiur. A few weeks earlier they took the castle, after defeating the Navarros present in the attempt to recover the Kingdom of Navarra. The explosion by order of the Count of Miranda, Virrey, was heard throughout the valley.
Source:
Joseba Asiron and Martín Altzueta, 50 key dates of the conquest of Navarra (1512-1525). (Txalaparta)