The most prominent symbol in Louis Sachar's Holes is the hole itself.
The literal hole in the ground is a symbol of punishment, hardship, and the cycle of poverty. Stanley Yelnats, the protagonist, is forced to dig holes as part of his sentence at Camp Green Lake. This symbolizes the cyclical nature of his family's curse, where each generation inherits the consequences of the previous one.
The holes also represent the characters' internal struggles. Stanley's digging represents his attempts to break free from his family's destiny and find his own path. The other boys' digging reflects their own attempts to cope with their difficult circumstances.
The hole also symbolizes the power of hope and redemption. Despite the harsh conditions, Stanley and the other boys find ways to connect with each other and find meaning in their work.
The hole in Holes is a powerful symbol that represents multiple themes and ideas. It's a reminder that even in the darkest of times, there is always hope for a better future.