  More than 25 years ago, unexpected metallic behavior was discovered on the
superconducting side of the superconductor-to-insulator transition. To this
day, the origin of this behavior is unclear. In this work, we present
resistance and broadband voltage noise measurements in the kilohertz regime in
amorphous indium oxide. We find that the metallic behavior gives rise to excess
noise much larger than what is expected from thermal noise with an unexpected
frequency and temperature dependence whose origin remains elusive.
