Nevertheless, as the first premier of post-communist Poland, Tadeusz Mazowiecki, put it twenty years later, on June 4, 2009, he wished western leaders would acknowledge the fact that the Berlin Wall would not have fallen if the the Poles had not defeated their communists on June 4 of 1989.
Mayon is a classic stratovolcano with a small central summit crater. The cone is considered the world's most perfectly formed volcano for its symmetry, which was formed through layers of lava flows and pyroclastic surges from past eruptions and erosion. The upper slopes of the basaltic-andesitic stratovolcano are steep, averaging 35â40 degrees.
Lahars are a specific kind of mudflow made up of volcanic debris. They can form in a number of situations: when small slope collapses gather water on their way down a volcano, through rapid melting of snow and ice during an eruption, from heavy rainfall on loose volcanic debris, when a volcano erupts through a crater lake, or when a crater lake drains because of overflow or wall collapse.