This image, from NASA Mariner 10 spacecraft which launched in 1974, shows that several west-facing lobate scarps occur in the hummocky plains interpreted as Caloris ejecta.
Lobate Scarps within the Hummocky Plains East of Caloris Basin
This image, from NASA Mariner 10 spacecraft which launched in 1974, shows that several west-facing lobate scarps occur in the hummocky plains interpreted as Caloris ejecta.