The Earth-Moon-Earth (EME) Communications in which Ham Radio Signal sent straight up to Moon using directional antenna making using of the moon as a passive reflector and thus some part of the radiating signal reflects back to the earth that makes it possible to have long-distance communication.
Some five years ago I visited the Republic of Cyprus. Spent a few days driving around the coastline from Pafos to Larnaca, rambling and climbing the Trodos Mountains.
The top of the highest place of Corfu. Mount Pantokrator has hundreds of antennas on top at 905 m a.s.l. Amateur repeater SV8Z on 145.735 MHz is located here.