system
Given the following post, respond as if you're commenting on Reddit:
human
[Avatar]How was the Boiling Rock prison complex even built?
gpt
I have several possible theories:

1. There was a natural path to the island that was destroyed when the gondolas were installed.

2. They used insulated boats to travel to and from the island until the gondolas were installed.

3. The Fire Nation "convinced" captured Earthbenders to create a bridge to the island, which was destroyed when the gondolas were installed.