The 2021 First Colony Foundation excavation at Fort Raleigh National Historic Site marks the conclusion of a project begun in 2017. Its goal is to identify structures built in 1585-6 as the Roanoke Colony’s scientific laboratory. The project is re-excavating specific locations where previous excavations may have missed or misinterpreted soil changes known as ‘features.’ Such features could be post holes, narrow slot trenches, shallow pits, modern intrusions, or the very common tree holes produced by the rotting of root systems. Slow and careful excavation is needed to unravel the stratigraphy of the site (the chronological record of different soil layers).