diff --git a/freva/src/drs/ingest.rs b/freva/src/drs/ingest.rs
index a9fcc384e5daf84079d4c17d119c6ce79554a073..3c1f27039c58926e0d2d2fef6695249467380baf 100644
--- a/freva/src/drs/ingest.rs
+++ b/freva/src/drs/ingest.rs
@@ -100,6 +100,12 @@ pub async fn ingest<P: AsRef<Path>>(
     })
 }
 
+/// Ingests a single structure from the DRS config.
+///
+/// This handles crawling the structure's `root_dir` and ingesting any files it finds there are valid for the structure.
+/// This inserts the files it finds into both files and latest collection within solr.
+///
+/// Invalid files, whatever the reason they're invalid, will be skipped.
 async fn ingest_structure(
     solr: Solr,
     structure: Structure,