Poland has honored over 700 recently discovered victims of Nazi Germany's mass executions in a ceremony marking the anniversary of World War II's outbreak. On Monday, the country held a state burial for the remains unearthed in what is now known as the Valley of Death, located in northern Poland.

Poland has held a state burial of the remains of more than 700 victims of Nazi Germany’s World War II mass executions that were recently uncovered in the so-called Valley of Death in the country’s north.

Solemn ceremonies have started in Poland to mark the 85th anniversary of German Nazi forces invading and bombing Polish territory at the start of World War II