@jmc88 - That is an interesting story and I also do not understand why a previous owner would bury all that.
I have heard instances where things are buried on purpose in order for future generations to find and study, such as some archaeological finds in China and even some place like Pompeii, where a Volcano buried an entire community.
Although this was entirely caused by nature, I have to wonder if this could be considered a hoard. The entire community was engulfed by the ash from the Volcano and this led to an incredible, buried archaeological discovery.
However, I do not know if this could be considered a hoard because it was not done on purpose and was simply a natural disaster caused by nature, that had no intention of people finding it later.