Use "subsurface" in a sentence

1. The subsurface gravel must have been poorly laid and sealed

2. It would take no time before someone produced weapons and bombs with that technology, weapons and bombs that could blow to pieces whole asteroids and carve huge craters where our subsurface space cities are

3. The Abyss is a subsurface symbol meaning to be immersed

4. To say subsurface relations were hostile was putting it mildly

5. picture of physical reality, the Seven Spirits of Evil form the surface and subsurface (earth and pit),

6. “The heat generated by Jupiter’s tidal flexing of Europa causes most of the moon’s subsurface ice to remain liquid, resulting in a subterranean ocean that we knew could possibly harbor life, which made it the first logical place for us to search for the beings responsible for creating the symbol on the moon’s surface

7. Sand volcanoes, or sand blows, are formed during earthquakes when water is squeezed out from subsurface layers, carrying sediment with it that erupts on to the surface