This repository collects all occurences of plant macro-remains of Olea europaea and Vitis vinifera in archaeological sites in central Italy, gathered from published sources. The data model has three tables (1→N cascades): sites (polygons) → contexts (polygons) → samples (points) 1) Where to find the data /data contains two subfolders with the same content in two formats: data/ geojson/ # spatial + attributes (for the web map / GIS) csv/ # attributes only (for spreadsheets / scripts) Why two formats? GeoJSON (.geojson): self-contained spatial features. Coordinates are [longitude, latitude] (WGS84 / EPSG:4326). Use in web mapping (Leaflet/Mapbox), GIS (QGIS), or any geo-enabled workflow. CSV (.csv): tabular attributes only (no geometry). Use for quick filtering, stats, R/Python analysis, spreadsheets, etc. The join keys (fid, parent_id, context_id) are present so you can rebuild the hierarchy. Files (both in geojson/ and csv/): sites.*,contexts. *,samples. * You can browse and filter the dataset on the GitHub Pages viewer: 👉 https://arborea-s-home.github.io/vitis_olea Features: modern base map (CartoDB Positron) green polygons for sites and contexts round species icons for samples (Vitis and Olea) per-species marker clustering with counts sidebar filters (taxa, remain type) and a timeline by ICCD phases tidy pop-ups with key attributes and counts