Blackstone Town was located at the southern end of the Underground World. The weakest monsters around it were Tier 2. Among them, the monsters near the edge of the world were the weakest.
Correspondingly, the food crops needed to sustain human survival were basically in the south of the town.
The 512 towns were all in a similar situation. They were all located at the edge of the city. Each town had many farmlands and granaries. They were self-sufficient and could also transport the surplus grain to the big cities to earn some extra money.
The No. 7 farmland was one of them. There was a stronghold of Blackstone Town here. On one hand, it protected the farmers, and on the other hand, it was used as a logistics supply base for hunters.
This was because the area around Farm No. 7 was mainly populated by low level Tier 2 monsters, with a small number of intermediate Tier 2 normal monsters mixed in. It was considered a relatively safe place.