The Erzgebirge -LRB- MISC@1 , -RRB- or LOCATION@1 are a mountain range , which for many centuries formed a natural border between LOCATION@2 in LOCATION@3 and LOCATION@4 in today 's LOCATION@5 , named in both local languages after the ore found there .

The Ore Mountains -LRB- MISC@2 , Czech Krušné hory -RRB- are a mountain range in LOCATION@3 and the LOCATION@5 .
