NASA's massive Crawler-Transporter, upgraded for the Artemis program, carried the agency's SLS (Space Launch System) and Orion spacecraft on the Mobile Launcher from the Vehicle Assembly Building to Launch Pad 39B at NASA's Kennedy Space Center in Florida in preparation for the Artemis II mission.

Source: https://www.nasa.gov/image-detail/sls-ksc-artemis-ii-rollout-1172026-33orig/