A military bunker structure located near the village of Bílý Potok in the Olomouc Region of the Czech Republic, close to the historical border with Poland. The coordinates place it within the Jeseníky mountain region, an area with a documented history of military fortifications, particularly from the Cold War period as part of the Czechoslovak border defense system. The alphanumeric designation 'XI/886/B1-90' follows a pattern consistent with Cold War-era military inventory or sector codes used by the Warsaw Pact forces.
Based on its location and naming convention, it is likely a relic of the extensive border fortification works constructed by Czechoslovakia between the 1950s and 1970s, designed to control and defend the state border. The current physical state and accessibility of the structure are not confirmed by available sources. The region's military heritage includes numerous such bunkers, many of which are now abandoned and subject to urban exploration (urbex), though specific details about this particular structure require on-site verification or access to specialized Czech military archives.