ABSTRACT: This study aimed to determine the inclination limits that may represent a risk to the structural safety of two corbel-vaulted monuments located atop a terrace in the archaeological site of Bonampak, Mexico. The vulnerability assessment was based on the collapse mechanisms analysis method proposed by the Italian normative OPCM 3431. In order to evaluate the most vulnerable kinematic chain of blocks, a genetic algorithm optimization tool was developed in the Grasshopper programming module for Rhinoceros 3D. The seismic hazard was obtained from the CFE Mexican design code. Safety checks were carried out according to the Damage and Ultimate Limit States from the OPCM 3431. Different scenarios of possible additional ground inclinations were tested for every case, and in terms of this variable, safety factors were obtained to be used in decision-making for the preservation of the monuments, aiming to avoid unnecessary actions of structural reinforcement.