Below
a centered microphone hole near SHIELD's hinge is a volume button, start button, back button, and home button, these encircling a multi-function SHIELD button — the largest button on the face of the device.
Doug Aitken's Sonic Pavilion, for example, features a deep
hole in the
center filled with sensitive
microphones that capture tremors deep inside the earth, while Matthew Barney's geodesic glass dome houses a giant tractor clutching at an uprooted tree.