Megalith-10m: 10 Million Public Domain Flickr Image Links

Megalith-10m provides approximately 10 million links to Flickr images categorized as unedited photographs under public domain or government work licenses. Curated by madebyollin and last updated in January 2026, the collection focuses on copyright-safe content for large-scale vision research. The dataset is distributed in Parquet format and includes metadata for images specifically tagged as "photo" on the Flickr platform.

Use Cases

• Training generative vision models using the 10 million public domain image links
• Benchmarking image retrieval systems against a large-scale index of Flickr URLs
• Analyzing the distribution of US Government Work and CC0 photography across the Flickr ecosystem

Strengths

• 10 million record count
• Strict license filtering including CC0 and Public Domain Mark
• Specific 'photo' category filtering to exclude non-photographic media

Limitations

• Link rot may result in inaccessible images over time
• Subjective 'wholesome' filtering criteria may introduce undocumented selection bias
• Requires significant bandwidth to download the underlying image data

Provenance

Source

Flickr

Collection Method

Filtered scraping of Flickr metadata based on license and media type tags

Freshness

Last updated January 2026.

Geography

Global