  This note is an extended version of the contribution to the CERN Council Open
Symposium on European Strategy for Particle Physics. It discusses an
experimental programme to explore the QCD confinement phenomena at CERN with a
new electron-proton and electron-nucleus collider using the existing SPS beams
(optionally also the future SPL and PS proton and ions beams) and the polarised
electron beam in the range of 5 to 20 GeV from a newly built Energy Recovery
Linac.
