Revert "Halved thumbnail size on concrete-viaduct"

This reverts commit 2dab690c63841dafc353bd9326a7f901699458fd.
Revert "Revert "Halved thumbnail size on concrete-viaduct""

This reverts commit 1d553061ac7d7714af37f6dad85b12ed9695cfbf.
Revert "Revert "Revert "Halved thumbnail size on concrete-viaduct"""

This reverts commit 5135b8131d66ed14192866ae56e1639a0c67951a.