We image seismic intrinsic (Qi^-1) and scattering (Qs^-1) attenuation in Long Valley caldera, California, by analyzing more than 1700 vertical-component waveforms from local earthquakes. Observed energy envelopes are fit to the diffusion model (data files) and seismic attenuation images (anomalies files) are produced using two-dimensional space-weighting functions.