| Area: | The Arenigs |
| County: | Gwynedd |
| Country: | Wales |
| Classification: | Dodd, Dewey, HuMP, and sub Marilyn (also Clem and Tump) |
| Height: | |
| Maps: | OL18(W) Explorer or 124 Landranger |
| Grid Ref: | SH742340 Hills nearby: 5km 10km 20km |
| Summit: | ground 5m SSW of trig point |
| Daylight: | dawn 04:00, sunrise 04:50, sunset 21:39, dusk 22:30 |
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