Choi Jin-hyuk
Park Kwang-ho
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Cast
Episode Guide
- 1. S1 E1 Mar 25, 2017
- Park Gwang-ho faces a suspect of a serial murder case that only targets women in Hwayang city.
- 2. Episode 2 Mar 26, 2017
- Gwang-ho who has been chasing down the suspect suddenly moves to year 2017.
- 3. Episode 3 Apr 1, 2017
- Gwang-ho figures out the same mark from the body that has been leaved on the victims 30 years ago.
A tunnel is an underground or undersea passageway. It is dug through surrounding soil, earth or rock, or laid under water, and is enclosed except for the portals, commonly at each end.
Learn about the types, characteristics and challenges of tunnels, from mining to transportation. Explore the history, examples and future of tunnel engineering and construction.
Learn the meaning, history, and usage of the word tunnel as a noun and a verb. Find synonyms, examples, phrases, and related words for tunnel.
Learn about the history, methods, uses, and facts of tunnels and underground excavations. Explore how tunnels have been built for mining, transportation, water, and other purposes since ancient times.
Learn about different techniques and applications of tunneling in geotechnical engineering. Explore topics such as cut-and-cover, jacked box, bored method, subsea tunneling and more.
Tunnel construction is a subset of underground construction. There are three basic types of tunnel construction in common use: Cut-and-cover tunnel, constructed in a shallow trench and then covered over. Bored tunnel, constructed in situ, without removing the ground above. They are usually of circular or horseshoe cross-section.
May 11, 2024 · Channel Tunnel, rail tunnel between England and France that runs beneath the English Channel. It is 50 km (31 miles) long and consists of three tunnels: two for rail traffic and a central tunnel for services and security. Learn more about the Channel Tunnel, including its history.
