(click map to open very large locator map - this section is orange)
Mammoth to Tower | ||
| 0.0 | The Grand Loop Road goes three ways at Mammoth Junction. The North Entrance Road heads north to the town of Gardiner, Montana. The Grand Loop Road heads to the south on the Norris to Mammoth section and east to Tower Junction, as described below. |
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| 4.1 |  On the left is a good sized parking area for Undine Falls. This is a 60 foot waterfall on Lava Creek that falls in three sections. |
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| 4.5 | The road passes by the Lava Creek Picnic Area. |
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| 5.0 | A small parking area on the right is for the trail to Wraith Falls. A short half mile hike leads to this 100 foot cascade on Lupine Creek. |
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| 6.3 |  The road goes by the Blacktail Lakes area on the left. |
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| 9.7 | A one-way gravel road leads off to the right. This is the Blacktail Plateau Road, which is not suitable for RVs, buses, or any large vehicle. |
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| 10.4 |  An area known as Phantom Lake is on the right. Depending on the time of year, this might be a shallow lake or a low-lying meadow. In August of 2007 it was completely dry, and a coyote was walking on the road next to it. |
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| 14.7 | A short unpaved side road to the left leads to the Hellroaring Trailhead. This is a moderate two mile hike to Hellroaring Creek. |
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| 15.2 | The road passes by Floating Island Lake. |
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| 16.9 | The one-way Blacktail Plateur Drive rejoins from the right. |
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| 17.0 | A short side road to the right leads to a still-standing petrified tree trunk. |
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| 18.3 | The road goes by the Tower Ranger Station. |
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| 18.4 | The road arrives at Tower Junction. A left turn enters the Northeast Entrance Road. Straight ahead, the Grand Loop Road continues from Tower to Canyon. A right turn goes to Roosevelt Lodge. |
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