"You are cursed by El YHW"—What is the Mt. Ebal tablet?

What is the Mount Ebal tablet, and what is the connection between this ancient artifact and one of the most important accounts in Israel’s earliest history? Before answering these questions, and to better appreciate just how old and how important this ancient lead tablet is, it may be helpful to briefly mention some other biblical artifacts. Full text here - https://www.tomorrowsworld.org/commentary/you-are-cursed-by-el-yhw-what-is-the-mt-ebal-tablet