Aguas Zarcas is a witnessed CM2 Carbonaceous Chondrite fall from Alajuela Province, Costa Rica, which occurred on 23 April 2019. The fall was widely observed and quickly recovered, with stones found around the Aguas Zarcas area shortly after the event. It is regarded as one of the most important CM2 Carbonaceous Chondrite falls since Murchison in 1969, providing unusually fresh material from a volatile-rich and organic-bearing parent body.

Aguas Zarcas specimens are typically dark, fine-grained, and fragile, reflecting their Carbonaceous composition and history of aqueous alteration. Many pieces show black fusion crust, while interiors can reveal a dark matrix with small pale speckles, hydrated minerals, and organic-rich components. The fall was recorded by cameras and eyewitnesses, and some material was recovered quickly enough to reduce terrestrial contamination, making it especially valuable for scientific study.

Studying Aguas Zarcas provides valuable insight into early solar system chemistry, including the role of water, hydrated minerals, and organic compounds in primitive asteroid material. For collectors, it offers a rare combination of witnessed fall provenance, Carbonaceous classification, rapid recovery, and strong scientific importance. Each specimen represents ancient solar system material delivered to Earth in one of the most significant modern meteorite falls.