  Subterrestrial neutron spectra show weak but consistent anomalies at
multiplicities ~100 and above. The origin of the excess events remains
ambiguous, but, in principle, it could be a signature of Dark Matter WIMP
annihilation-like interaction with a massive Pb target. However, since the
results of the available measurements are below the 5-sigma discovery level,
and the observed anomalous structures are on a significant muon-induced
background, an independent verification at even greater depth is needed. For
that purpose, we have launched NEMESIS 1.4 - a new dedicated experiment
consisting of a 1134 kg Pb target and 14 He-3 detectors with PE moderators and
a fully digital readout. NEMESIS 1.4 has been taking data at the deepest level
(1.4 km, 4000 m.w.e.) of the Pyhasalmi mine, Finland, since November 2022. We
describe the idea behind the new setup, compare the first results with the
previous data and Monte Carlo simulations, and give the outlook for further
research. If the existence of the anomalies is unambiguously confirmed and the
model interpretation positively verified, this will be the first Indirect
Detection of Dark Matter in the laboratory.
