2Eerie Spaceship Ambience with Intermittent Electronic Crackles
3Electronic Alien Broadcast Interference with Strange Vocalization
41Spaceship Sonar Blips with Echo and Transport Ambience Take 3
42Spaceship Sonar Blips with Echo and Transport Ambience Take 2
48Modern Spinning Four-Blade Helicopter Whooshes Without Engine Drone
81Deep Synthesized Rolling Door or Rolling Rock Sci Fi Effect
94Spaceship Sonar Blips with Echo and Transport Ambience Take 1
2Subway Train Arrives with Long Brake Squeals and Rail Clicks and Stops Close to Mic
3Continuous Single Cicada Ratchet with Faint Bird in Background
4Victoria Train Station London in London with General Background and Activity
6Country Night Ambience with Crickets and Insects Chirping and Buzzing and Frogs Calling
8Marsh Ambience with Large Bed of High-Pitched Insect Hum, Light Chorus of Frogs and Intermittent Exo
10Large Subway Platform Wide Perspective with Train Arriving with Brake Groan and Air Hiss