Blockhaus

A blockhaus is a type of fortification, typically a small, isolated building constructed from timber logs. These structures were historically used for defensive purposes, often serving as lookout posts, temporary shelters, or small garrisons. The term "blockhaus" originates from the German word for "log house" or "block house."

The construction of a blockhaus is characterized by the interlocking of large, roughly hewn logs, stacked horizontally. The walls are often thick, providing substantial protection against small arms fire. Windows, if present, were usually narrow and strategically placed for observation and defense. Entrances were typically solid and reinforced.

Blockhaus designs varied depending on the region and the specific military needs of the time. Some were simple, single-room structures, while others might have included multiple levels or additional defensive features like loopholes. They were particularly common in frontier regions or during periods of conflict where rapid and sturdy construction was required.

In modern times, the term "blockhaus" can also refer to prefabricated or modular structures, often made of concrete or steel, which serve a similar defensive purpose, such as guard posts or security shelters. However, the historical understanding most commonly refers to the log-built fortifications. The simplicity and effectiveness of their design made them a practical solution for localized defense for centuries.