* After weeks at sea, the sailors were overjoyed to finally set foot on terra firma.
* The earthquake caused the once-solid ground to shift, making it feel like terra firma was no longer reliable.
* The astronaut described the feeling of returning to Earth as a welcome return to terra firma.
* The climbers yearned for the safety of terra firma after their perilous journey up the mountain.
* The ancient city was built on terra firma, but the coastline had shifted over centuries, leaving the ruins partially submerged.
Note: "Terra firma" is a Latin phrase meaning "solid ground." It's often used in a figurative sense to emphasize a sense of stability or security after a period of instability or danger.