Mount Sylvania
| Use attributes for filter ! | |
| Elevation | 298 |
|---|---|
| Volcanic field | Boring Lava Field |
| Parent range | Tualatin Mountains |
| Locations | Multnomah County |
| Oregon | |
| U. S. | |
| Mountain range | Boring Lava Field |
| Tualatin Mountains | |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2366618 |
About Mount Sylvania
Mount Sylvania is an extinct volcano, part of the Boring Lava Field, on the outskirts of Portland, Oregon. Parts of the mountain are within the cities of Portland, Lake Oswego, and Tigard. Mountain Park, a Lake Oswego suburban development, was built on the mountain in the 1970s.
