Poured a 6' x 6' wide by 2' deep footer 2.5' below ground with a 24" reinforced concrete cylinder and set anchor bolts for an industrial light pole.
This is how it turned out:
And this is how it started:
Click this link to see more photos:
https://drive.google.com/drive/folders/1CORr-7FORCKyXpNypZ8M1221ECdYFgro?usp=sharing