23 עונה
705 פרק
Modern Marvels - Season 1 Episode 1 פרק 1
The world’s largest concrete dam–and the largest concrete structure in the world–lies on the Columbia River in the State of Washington. B uilt in 1931, it is also one of the largest hydroelectric power plants in the world.
- שָׁנָה: 2022
- מדינה: United States of America
- ז'ָאנר: Documentary
- סטוּדִיוֹ: History, H2
- מילת מפתח: technology, invention, disaster, construction, machine
- מְנַהֵל: Bruce Nash
- ללהק: