MO-S5 Na trati MO-S5 Na trati - kanon MO-S5 Na trati - ubikace

Who we are

Infantry Blockhouse MO-S5 “Na trati” forms part of the Czechoslovak border fortification system that was built in 1935–1938. The bunker is situated near Starý Bohumín, and is, thus, part of the Moravská Ostrava construction section, sub-section Bohumín.

As far as its construction is concerned, it is an atypical two-sided separate infantry blockhouse of the 3rd degree of resistance, two-storey high. The construction company of Dr Ing Karel Skorkovský from Prague won the public contract for its construction. The concreting works took place in July 1936 and lasted two weeks. Altogether, 4.314 cu m of concrete was used to build the bunker.

Originally, the bunker was equipped with two anti-tank guns and four separate heavy machine guns placed in shooting rooms. This equipment was complemented by a heavy and light machine gun in two infantry bells, three light machine guns placed in auxiliary loopholes and six grenade tubes.

The bunker was manned by soldiers of the 1st Company, I. Battalion of the 4th Border Regiment. Combat crew consisted of 42 soldiers; in peace, the crew was half the size. Additionally, the combat crew was commanded by two officers, and there were three artillery observers.

In 1938, the area of Bohumín was, as part of Cieszyn region, occupied by Poles, and the bunker had a Polish crew. In September 1939, the Poles withdrew without a fight, and Germany acquired the region and the bunker itself. After 1945, the structure was abandoned. Since 1999, the Bohumín Military History Club (KVH Bohumín, z.s.) has been in charge of the bunker.




Dear visitors,
in connection with the declaration of a state of emergency due to the pandemic COVID-19 the Infantry blockhouse MO-S5 “Na trati” is closed from Friday 9th October 2020 until further notice.

Thank you for understanding

Opening Hours

For prevention against COVID ‑ 19, the following applies

Conditions necessary to enter the bunker

  • The visitor must wear a veil or other respiratory protection. A veil in limited quantities can be purchased from the guide for CZK 50 (EUR 2).
  • The visitor must use hand disinfection. (Disinfection is provided by KVH Bohumín)
  • The maximum number of people in one group is 10, including children.


  • Try to keep a distance of 2 meters.
  • Try not to clump in front of the object.
  • Do not touch the exposed objects.

Admission in opening hours
Admission for persons over 15 years of age is CZK 50 (EUR 2), children under 15 years of age are admitted free of charge (however, they must be accompanied by a paying person). On the first Saturday of the month, the holders of the (Těšínské Slezsko-card) pay for their entry only CZK 40 (EUR 1.6).

Admission outside of opening hours
Admission for persons over 15 years of age is CZK 100 (EUR 4),
children under 15 years of age are admitted for CZK 50 (EUR 2),
children under 6 years of age are admitted free of charge.
All children must be accompanied by a person over 15 years of age.

In 2020 season, we are open
From June 6th to September 28th on Saturdays, Sundays and public holidays and on October 28th. There are guided tours through the bunker at 2:00, 2:30, 3:00, 3:30, 4:00, 4:30 a 5:00 p.m.. Guided tours take approximately 1 hour.

School field trips
When you arrange your visit in advance, the children will pay an admission fee of CZK 20 (EUR 1) / person. For every ten children, the accompanying person has free admission.
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Individual visits
Any other terms can be arranged after the previous agreement (at least three days in advance) for admission fee see "Admission fee outside of opening hours". For an additional CZK 20 (EUR 1) / person, it is also possible to arrange entry to the MO-S4 “Šedá vila”.
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Visiting Regulations in PDF

Week 43

How do I get to the bunker


Telephone number

Chairman Ing. Pavel Bílek
+420 604 148 470
Webmaster Bc. Martin Cieslar
+420 732 450 251

Seat of the association / Billing address

Klub vojenské historie, z.s.
Štefánikova 361
Bohumín 73581
Česká republika

IČ: 26519160

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Partners & Sponsors

We are part of the following touristic trails: Tachnotrasa and Těšínské Slezsko

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