Home / Bernardo Caal Xol should never have spent a day in prison / Preventative Detention Center in Cobán, Alta Verapaz, Northern Guatemala. Home / Bernardo Caal Xol should never have spent a day in prison / Preventative Detention Center in Cobán, Alta Verapaz, Northern Guatemala. Preventative Detention Center in Cobán, Alta Verapaz, Northern Guatemala.