Sierra National Forest Announces Trail Closure in Nelder Grove Details Last Updated: Friday, 25 May 2018 12:21 Published: Friday, 25 May 2018 12:19 View Comments May 25, 2018 - Sierra National Forest Announces Trail Closure in Nelder Grove.The 2017 Railroad Fire has impacted the Shadow of the Giants National Recreation Trail. Source: Sierra National Forest View the discussion thread. back to top