This paper draws from "Silencios" -- a photography series by the Colombian artist Juan Manuel Echavarría. "Silencios" comprises more than 120 portrayals of abandoned schools due to armed conflict in Los Montes de María, Colombia. Sharing Echeverría's belief that 'these chalkboards have lessons to tell us about war', the author of this paper advocates for the pedagogical use of "Silencios" to promote and support memory works in Colombia. The present analysis acknowledges that hegemonic memories and narratives have a negative impact on conflict-affected societies due to their authoritarian and oppressive character. Therefore, the pedagogical use of "Silencios" seeks to ignite multiple narratives and counterhegemonic memories that might emerge as the public interacts with the photography. The visuals, in this sense, become an educational opportunity to stimulate reflection and resistance against the monopoly of the past in a country that is currently emerging from conflict. In this paper, the abandoned schools are considered as memory sites, and as renewed learning spaces to stimulate reflections and debates upon the armed conflict. "Silencios" can contribute to peacebuilding efforts by bringing up the possibility to reconsider essentialist conceptions of peace, memory, and pedagogy, that might hinder potential venues for enduring peace in Colombia.