I honestly wouldn't be surprised if sub terra did go before 2020, the GP usually walk past and go 'what's that?' And it's not exactly re ridable, it barely ever had/has a queue and it's unreliable. A few days after opening they closed it for improvements, the ride stayed at its peak for about a season, then it just went downhill again when the actors were removed, then they threw money at its restraint system, that's gone down the drain pretty much and now we have no idea what maintenance it's going through now. It's a good concept, poor final product.