  In June 1976, a pristine meteorite stone weighing approximately 1 kg, fully
covered with a fresh black fusion crust, was collected on a mountain road in
the high-altitude Alpine environment. The recovery took place while clearing
the remnants of a snow avalanche, 2 km northwest of Ischgl in Austria.
Subsequent to its retrieval, the specimen remained in the finder's private
residence without undergoing any scientific examination or identification until
2008, when it was brought to the University of Innsbruck. The sample was
classified as a well-preserved LL6 chondrite, with a W0 weathering grade,
implying a relatively short time between the meteorite fall and its retrieval.
To investigate the potential connection between the Ischgl meteorite and a
recorded fireball event, we have reviewed all documented fireballs ever
photographed by German fireball camera stations. This examination led us to
identify the fireball EN241170 observed in Germany by ten different European
Network stations on the night of November 23/24, 1970, as the most likely
candidate. We employed state-of-the-art techniques to reconstruct the
fireball's trajectory, and to reproduce both its luminous and dark flight
phases in detail. We find that the determined strewn field and the generated
heat map closely align with the recovery location of the Ischgl meteorite.
Furthermore, the measured radionuclide data reported here indicate that the
pre-atmospheric size of the Ischgl meteoroid is consistent with the mass
estimate inferred from our deceleration analysis along the trajectory. Our
findings strongly support the conclusion that the Ischgl meteorite originated
from the EN241170 fireball, effectively establishing it as a confirmed
meteorite fall. This discovery enables to determine, along with the physical
properties, also the heliocentric orbit and cosmic history of the Ischgl
meteorite.
