  Three-body states are critical to the dynamics of many hadronic resonances.
We show that lattice QCD calculations have reached a stage where these states
can be accurately resolved. We perform a calculation over a wide range of
parameters and find all states below inelastic threshold agree with predictions
from a state-of-the-art phenomenological formalism. This also illustrates the
reliability of the formalism used to connect lattice QCD results to infinite
volume physics. Our calculation is performed using three positively charged
pions, with different lattice geometries and quark masses.
