The Northwest Africa 13203 Meteorite with oriented regmaglypts.
Steve Jurvetson, CC BY 2.0 via Flickr: flic.kr/p/2jAoGVQ
Oriented Regmaglypts
Regmaglypts are thumbprint-sized indentations in the surface of larger meteorites formed by ablation as the meteorite passes through a planet's atmosphere, probably caused by vortices of hot gas.Flickr