 Hear the full interview with Hubert, this story at AdvantageNews.com. In the meantime, investigators continue to look at all of Gordon Moore Park, looking at current and past mining operations, looking at the potential for other sinkholes throughout the park area. The park is closed through at least the weekend. The city of Alton and New Frontier Materials issued a statement saying safety is of the utmost importance and they'll be looking at the entire park to make sure it is safe before reopening to the public.