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.
Lava domes are formed when erupting lava is too thick to flow and makes a steep-sided mound as the lava piles up near the volcanic vent. The eruption of Mount St. Helens in 1980 was caused in part by a lava dome shifting to allow explosive gas and steam to escape from inside the mountain.