Kłodzko Valley in the context of Náchod

The Boii (Latin plural, singular Boius; Ancient Greek: Βόιοι) were a Celtic tribe of the later Iron Age, attested at various times in Cisalpine Gaul (present-day Northern Italy), Pannonia (present-day Austria and Hungary), present-day Bavaria, in and around present-day Bohemia (after whom the region is named in most languages; comprising the bulk of today's Czech Republic), parts of present-day Slovakia and Poland, and Gallia Narbonensis (located in modern Languedoc and Provence).

In addition, the archaeological evidence indicates that in the 2nd century BC Celts expanded from Bohemia through the Kłodzko Valley into Silesia, now part of Poland and the Czech Republic.

The Central Sudetes (Czech: Orlická oblast or Střední Sudety, Polish: Sudety Środkowe, German: Mittelsudeten) are the central part of the Sudetes mountain range on the border of the Czech Republic and Poland. They stretch from the Nysa Kłodzka River and the Kłodzko Valley in the east to the upper Bóbr in the west.

The Central Sudetes comprise a number of mountain ranges, including:

The Eastern Sudetes (Polish: Sudety Wschodnie, Czech: Východní Sudety or Jesenická oblast) are the eastern part of the Sudetes mountains on the border of the Czech Republic and Poland. They stretch from the Kłodzko Valley and the Eastern Neisse River in the west down to the Moravian Gate in the east, leading to the Outer Western Carpathians.

Kłodzko ([ˈkwɔt͡skɔ] ; Czech: Kladsko; German: Glatz; Latin: Glacio) is a historic town in south-western Poland, in the region of Lower Silesia. It is situated in the centre of the Kłodzko Valley, on the Eastern Neisse (Nysa Kłodzka) river.

Kłodzko is the seat of Kłodzko County (and of the rural Gmina Kłodzko, although the town itself is a separate urban gmina), and is situated in Lower Silesian Voivodeship. With 25,717 inhabitants at the 2021 Census, Kłodzko is the main commercial centre as well as an important transport and tourist node for the area.