How to Use "subterranean" with Example Sentences

1. Puerto princesa subterranean river national park the philippines
2. In the meantime , engineers are experimenting with all kinds reimagined nuclear plant paradigms , from floating nuclear power stations that are immune to seismic calamity to subterranean systems that are already safely buried deep beneath the ground .
3. Get down with religious pilgrims and subterranean mummified saints at kiev 's caves monastery .
4. But more worrying than these official numbers are the inflationary pressures springing from a subterranean world of informal finance .
5. For decades , the tunnels of the solotvyno salt mine in ukraine have hosted subterranean convalescents .