Where is the declaration of republic of biak-na-bato?

The Declaration of the Republic of Biak-na-Bato was proclaimed on November 1, 1897, at Biak-na-Bato, a mountainous area in the province of Bulacan, Philippines. This declaration marked the establishment of a revolutionary government led by Emilio Aguinaldo during the Philippine Revolution against Spanish colonial rule. It represented a significant moment in the struggle for Philippine independence, although it was short-lived due to subsequent negotiations and the Pact of Biak-na-Bato.