archaeologists detected what they said could be 200 unmarked graves at this school in camp loop -- kamloopscatholic cemetery here, but the headstones were bulldozed in the 1960s by a priest after a dispute with the former chief. >> and what were these lists for? >> a small team of researchers has been trying to discover the names of those children buried here. but for decades, the government and the church have been reluctant to share their records. >> do you know that they're all children? >> we can't verify how much are children, but based on the research we're doing, a lot of them were children that were forced to go to the marieval residential school and died in the marieval residential school. >> the discoveries of the graves opened deep wounds. more than a dozen churches have been vandalized or destroyed, and thousands have marched, demanding the pope apologize and the churches open archives to help identify any missing children. indigenous communities across the country have begun conducting their own searches using ground penetrating radar. >> we have laid out a number of graves. >>