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.
The water lowers the melting point of the mantle and triggers melting that generates magma. The magma rises and erupts at the surface at a volcano like Mayon. Recorded eruptions. Mayon is the most active volcano in the Philippines, erupting over 51 times in the past 400 years. The first record of a major eruption was witnessed in February 1616 by Dutch explorer Joris van Spilbergen who recorded it on his log in his circumnavigation trip around the world.