leading radioactive decay

it was wet and sketchy, but fun!
| North_America: United_States: Washington: I-5_Corridor-North: Exit_38: Amazonia | |
| Route: | Radioactive Decay - 5.10b |

| North_America: United_States: Washington: I-5_Corridor-North: Exit_38: Amazonia | |
| Route: | Radioactive Decay - 5.10b |