Longest echo
- Who
- Trevor Cox, Alan Killpatrick
- Where
- United Kingdom (Inchindown,Oil Storage Tank, Inchindown, Scotland,)
- When
- 03 June 2012
The longest echo measures 75 seconds, and was produced and measured by Trevor Cox and Allan Kilpatrick (both UK) at a disused oil tank at Inchindown, Ross-shire, UK, on 3 June 2012.