Nelder Grove, formerly known as Fresno Grove when it was within a much larger 19th-century Fresno County, is a Giant sequoia grove located in the western Sierra Nevada within the Sierra National Forest, in Madera County, California. The grove is a 1,540-acre (6.2 km2) tract containing 54 mature Giant Sequoia (Sequoiadendron giganteum) trees, the largest concentration of giant sequoias in the Sierra National Forest. The grove also contains several points of historical interest. These include pioneer cabins and giant sequoia stumps left by 19th century loggers.