If possible, you should not bid on real estate for auction if the land is located on a cliff, unless you have to take the risk that the land will collapse due to a natural disaster after you purchase it.
Not all risks such as the risk of land collapse are listed in the documents of auctioned real estate disclosed by the court.
The risk of land collapsing due to natural disasters after purchase is beginning to be treated as one of the most important issues in all real estate transactions in Japan, as new related laws and regulations are being enacted.