Named Watching Trees, the festival will run from September 2 - September 4 in the Forest of Dean.
With 500 attendees and two stages, the festival will be celebrating Optimo’s 25-year anniversary.
"We seek to replicate the original energy and fun of the early Optimo parties," the duo said. " The feeling of the first time we danced outdoors in woodlands and open fields and enjoyed the freedom of getting to know the person next to us."
The website reveals the event will be “set in the rolling hills and woodlands of the Awre District, 40 mins from Bristol and just an hour from Cardiff and Birmingham - the festival's inaugural year celebrates Optimo (Espacio) reaching 25 years of loving your ears, bringing this energy to a three-day party in the backwoods.”
Local food and drink will be available at the event with the line-up still to be announced.
Head to Watching Trees website to register for tickets.
Becky Buckle is Mixmag's Digital Intern, follow her on Twitter