Experienced travelers might know this already but for travelers to Europe with less experience I want to mention a topic which can impact your travel: Bomb findings from WWII.
Example from yestrday: ad-hoc closing of SXF Berlin-Schönefeld airport (report in German) due to bomb finding near taxiway G. In this case the airport decided to continue flight operations after 1 hour and to dismantle the bomb during the night; only 6 flights were re-directed to Berlin-Tegel.
Regions: Bomb findings from WWII can occur in Germany (most cases), Belgium, the Netherlands, France (eastern parts), Austria, and Poland (western parts). Switzerland was neutral during WWII - no danger there. Other cases of amunition findings can happen in nearly all regions of Europe.
Some more info on bomb findings and their impact in Germany.
Background: In Germany thousands of unexploded bombs are in the ground. There are nearly no reports of bombs that exploded uncontrolled after decades. So no need to worry about this.
Discovery: They are found when grounds are initially developed or re-constructed. Therefore there is no longterm-planning to dismantle bombs. Normally the authorities react immediately with specialists first inspecting for further decision:
- transport,
- dismantling or
- controlled detonation.
Procedures & impact: These actions require often to evacuate a circle of danger (most times 500 - 1000 metres) from human beings who can be affected by a posiible detonation. In this case the next day is planned to do this properly; each case lasts 5 - 20 hours in which also traffic (airports, train stations, trains, buses, cars etc.) are banned from that circle which regularly impact trips of travelers. Police ensure closings.
Information: Normally the regonal public media informs about these cases, e.g. rbb for Berlin and Brandenburg or BR for Bavaria. Also the websites and Twitter accounts of transport and airport providers give a good and current information of the status and possible options.
Behaviour of people: Always follow advice of police and authoriteies. For people living in regions which experienced a lot of bomber raids are very used to that - nothing really special. So do not be astonished to see little nerved bute relaxed persons.
Impact regulation: Transport providers such as Deutsche Bahn normally react very generously and let travelers just use the next available train or a different connection. Just ask staff at train stations, visit a DB Reisezentrum or call the hotline of your travel provider. In most cases it is also possible to get a refund for an unused ticket. Of course transport providers do not reimburse any other costs (e.g. for missing a paid event).
Wishes: Always have a safe and impact-free journey!