The cultural iceberg model suggests that culture has visible and invisible parts, with most of it lying below the surface. The visible parts include things like language, food, arts, and rituals, while the invisible and underlying parts consist of values, beliefs, attitudes, and assumptions. This model helps explain why aspects of a culture may not be obvious to outsiders and emphasizes gaining a deeper understanding of a culture below superficial observations.

1.
http://www.languageandculture.com/cultural­iceberg

2.
http://www.languageandculture.com/cultural­iceberg