Vienna the Capital of Music ─ Sea Grotte‧音樂之都 - 維也納 ─ 海底湖

Seegrotte means an underground lake, a rare natural phenomenon.


A boat trip is good to experience the silence of the lake. Due to the darkness, not many photos were taken successfully.


See those pink marks. That is quartz. The seegrotte was a quartz mine.

Horses were major carriers in the mine. Here is a stable.


The Seagrotte was also an aircraft manufacturing factory during world war 2.