Big Thicket sees 40% spike in visitors, economic boost amid COVID-19 pandemic Over the last couple of years, the Big Thicket National Preserve has become an increasingly-popular destination for Texans and out-of-state visitors as well. Author: James Grant (12NewsNow), KBMT (12NewsNow) Published: 11:34 PM CDT June 30, 2021 Updated: 11:34 PM CDT June 30, 2021 BEAUMONT, Texas — The COVID-19 pandemic brought more people outdoors, and it led to a boost in visitors at the Big Thicket National Preserve. The positive trend started several years ago. Over the last couple of years, the Big Thicket National Preserve has become an increasingly-popular destination for Texans and out-of-state visitors as well.