The Periadratic seam is the area between two tectonic plates in the alps, mainly centered in the eastern side. The seam forms the division between the Adriatic plate and the European plate. The two are converging, or coming together. This is what forms mountains. The area is very prone to earthquakes when the plates shift the slightest bit. This makes things very dangerous, but more often than not the area is safe.
When an earthquake strikes, your worst enemy would be the snow at the mountaintops. Even rocks can break off and come showering on you, but an avalanche can bury you alive.