Vivian Quarry in Llanberis is set to allow the public in for 10 days.
From June 17, people will be allowed into the site to see what 'exciting innovations' have been put in place.
Visitors will also be able to see attractions that will be in place from July and make any bookings they would like.
This comes as significant investments have been made to enhance the site, with plans to make it a flagship destination for what has been described as 'world-first' technology.
There will also be a number of events scheduled, including comedy nights, workshops, and concerts, which people can book through the company's website.
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Katie Gill, operations manager and resident MC of the upcoming monthly comedy nights, said: "So much love, care, and commitment to heritage has gone into this site.
"It’s amazing that North Wales gets to be the flagship site, which is a testament to how special, unique, and deserving this incredible part of Wales truly is.
"Comedy is my love language; laughing with people is the most beautiful connection.
"To get to bring that to this site that envelops you is a wonderful opportunity.
"And if it doesn't go well, I can throw myself in the water!"
You can book through their website, and follow their social media platforms for all updates.
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