  Matra Gravitational and Geophysical Laboratory (MGGL) has been established
near Gy\"ongy\"osoroszi, Hungary in 2015, in the cavern system of an unused ore
mine. The Laboratory is located at 88~m below the surface, with the aim to
measure and analyse the advantages of the underground installation of third
generation gravitational wave detectors. Specialized instruments have been
installed to measure seismic, infrasound, electromagnetic noise, and the
variation of the cosmic muon flux. In the preliminary (RUN-0) test period,
March-August 2016, data collection has been accomplished. In this paper we
describe the research potential of the MGGL, list the installed equipments and
summarize the experimental results of RUN-0. Here we report RUN-0 data, that
prepares systematic and synchronized data collection of the next run period.
