**Igloos: The Type of House Found in Cold and Forest Regions**

**Introduction**
In cold and forest regions, where temperatures can drop to extreme levels, the type of house commonly found is an igloo. Igloos are traditional dwellings used by the indigenous people of the Arctic regions, such as the Inuit and Yupik. These unique snow houses provide excellent insulation and protection against the harsh winter conditions.

**Features of Igloos**
Igloos are made entirely of snow and have several distinctive features that make them suitable for cold and forest regions:

1. **Construction**: Igloos are built using blocks of compacted snow. The snow blocks are carefully cut and shaped to form a dome-shaped structure. The inner walls are smooth, while the outer walls are thicker to provide insulation.

2. **Thermal Insulation**: The thick layer of snow acts as an effective insulator, trapping the heat inside the igloo and preventing it from escaping. This helps to maintain a relatively warm and comfortable environment inside, even when the temperatures outside are freezing.

3. **Structural Stability**: The dome-shaped design of igloos allows for optimal weight distribution, making them structurally stable. The pressure from the snow on the outer walls adds strength to the structure, making it resistant to strong winds and heavy snowfall.

4. **Ventilation**: Despite being made of snow, igloos have a small ventilation hole at the top, known as a qulliq. This hole allows for the escape of moisture and the release of smoke from fires, preventing the accumulation of condensation inside the igloo.

5. **Natural Light**: Igloos have a small, translucent window made of ice blocks. This allows natural light to enter the interior, reducing the need for artificial lighting during daylight hours.

**Advantages of Igloos**
Igloos offer several advantages in cold and forest regions:

1. **Warmth**: The compact snow walls and insulating properties of igloos help to retain heat, providing a warm and comfortable living space.

2. **Accessibility**: Since igloos are constructed using readily available snow, they can be built almost anywhere in cold and forest regions, providing shelter to the inhabitants.

3. **Mobility**: Igloos can be easily constructed and dismantled, making them suitable for nomadic populations who move frequently in search of resources.

4. **Environmentally Friendly**: Building igloos does not require the use of any additional materials, making them a sustainable and eco-friendly housing option.

**Conclusion**
In conclusion, igloos are the type of house commonly found in cold and forest regions due to their excellent insulation, structural stability, and accessibility. These unique snow houses provide warmth, mobility, and sustainability to the indigenous people living in these regions, allowing them to thrive in extreme weather conditions.