It’s possibly a Quantum Tunneling Device for interstellar travel.<p>An old advanced alien civilization created thousands of these QTD, and sent them all over the galaxy, to land on rocky habitable planets, waiting to be discovered one day.<p>In essence, these devices are synchronized with a quantum clock, for instantaneous bidirectional quantum communication across vast interstellar distances.<p>It uses the essence of quantum entanglement, whereby every nanosecond, a quantum bit is revealed, and its complement device is triggered. Thus allowing for massive instantaneous communication across vast interstellar distances.<p>Furthermore, by standing in front of the QTD device, and eliciting an audible command, the device will scan the subject in front of it, and allow himself to be dematerialized and transported to any other node in the interstellar QTD network. Some may call this a Stargate.<p>Or it was planted there by some hippy high on shrooms.