We present results on the light hadron spectrum and related quantities, obtained by RQCD on $N_f=2+1$ flavour CLS ensembles of non-perturbatively order-a improved Wilson fermions, employing open boundary conditions in time, Configurations at five different values of the lattice spacing, ranging from 0.086 fm down to below 0.04 fm, exist and many quark mass combinations are analysed, in particular along a line of an (almost) constant sum of quark masses, a constant renormalized strange quark mass and the symmetric $m_u=m_s$ line. We carry out chiral and continuum limit extrapolations.

Hadron Spectroscopy and Interactions