Cheddar Gorge Caves takes visitors on a digital journey through history

Cox’s Caves were unveiled in May as the first new attraction at Cheddar Gorge & Caves in almost a quarter of a century. LCI Productions created a multi-media walk-through experience dubbed ‘Dreamhunters – The Adventures Of Early Man’, that takes visitors through ancient human history within the caves with the help of some state-of-the-art projection technology from Casio, high tech sound systems and stunning lighting. Based within the eight natural chambers of Cox’s Cave, they created a 100 metre walk-through route which used AV technology to tell the story of early man in eight chapters.

Creating this experience was a feat of engineering as the striking natural features of the cave presented particular AV challenges. All power and signal facilities needed to be installed from scratch, and the outdoor environment meant that all technology needed to handle exposure to the elements as part of this. Signal and power were paramount to creating the experience and it took a team of six installers 57 days to install the three kilometres of fibre-optic cables, two kilometres of audio cable, 1.5 kilometres of DMX cable and 1.2 kilometres of mains cable across the eight chambers. As design director at LCI Productions Rob Paul explained, “there is not a straight edge in this place”, so special considerations had to be made to work with the natural features.

“One of the other challenges we hadn’t fully appreciated was the acoustic element of the caves”, Paul continued, “So we put in additional treatment to create the best guest experience.”

This included sound-proofed flooring, as well as curtains to divide the different cave chambers and ceiling elements to minimise audio interference. 55 LED lights and eight underwater LEDs, as well as a choreographed laser showcased the stunning characteristics of the cave.

The pièce de résistance of the installation though was the wraparound video experience created with 16 Casio projectors throughout the walkthrough, chosen for their reliability and technical specifications. Mapped to the various features of the cave, LCI Productions created custom content to be projected on the rocky faces and cave walls.

Using five Casio Ultra Short Throw (UST) projectors and a further seven Casio Green Slim series, they were able to take advantage of the dramatic natural shapes within the cave to amplify the visual storytelling. The UST projectors in particular, with a throw distance of just 27 centimetres to produce an 80-inch image, allowed even the most difficult of spaces within the cave to become transformative parts of the walkthrough.

Casio's laser and LED hybrid lamp source meant that even in the difficult environmental conditions of the cave environment, the projectors would perform optimally for the guests. The throw distances achieved with the zoom lens and UST meant that LCI could attain all the visual effects they required as part of the experience. The projector size, DMD TI Chip and Serial Control were also key in bringing the displays to life.

It took the team 30 days to design and 70 days to produce the video story, which takes visitors through the story of ancient man, with each chamber revealing a different chapter in the story.

As the Casio projectors use laser & LED there are no replacement parts, or lamps and filters to change, helping to minimise maintenance and virtually eliminating downtime, meaning that guests can always rely on the attraction to wow and entertain them.