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MacCulloch's Fossil Tree on the Isle of Mull

Discover a 12-meter fossilized tree embedded in volcanic cliffs on a dramatic coastal hike in the Isle of Mull’s wild Ardmeanach Peninsula.

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MacCulloch's Fossil Tree is a remarkable 12-meter-high fossilized conifer tree imprint embedded in the sea cliffs of the Ardmeanach Peninsula on the Isle of Mull. Discovered in 1819, this geological marvel formed when lava engulfed a forest millions of years ago. The tree is accessible via a challenging 14-mile coastal walk, featuring rugged terrain and a steep ladder descent. The site is part of a protected National Scenic Area renowned for its dramatic volcanic landscapes and rich natural heritage.

A brief summary to Fossil Tree

  • Isle of Mull, GB
  • Duration: 6 to 10 hours
  • Free
  • Environment icon Outdoor
  • Mobile reception: 3 out of 5

Local tips

  • Check local tide times before your visit to ensure safe access to the Fossil Tree at low tide.
  • Wear sturdy footwear with good grip for navigating rocky coastal paths and boulder beaches.
  • Be prepared for a physically demanding 14-mile walk including a steep ladder descent; not suitable for dogs or those with vertigo.
  • Consider joining a guided walk for added safety and insights into the area's geology and history.
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Getting There

  • Car

    Drive to the Tiroran car park on the Isle of Mull, which serves as the starting point for the Fossil Tree walk. The drive from Tobermory takes about 40 to 50 minutes. Parking availability can be limited during peak seasons; parking fees may apply locally.

  • Public Transport

    Public bus services on Mull are limited and infrequent; reaching Tiroran by bus requires careful scheduling and may involve long waits. It is generally recommended to use private transport for easier access to the trailhead.

  • Walking

    The walk from Tiroran to the Fossil Tree is approximately 14 miles (22.5 km) along coastal and forest paths with varied terrain including rocky and narrow cliffside sections. The route includes a steep ladder descent and rough tidal beach walking, requiring good fitness and sturdy footwear.

Fossil Tree location weather suitability

  • Weather icon Any Weather
  • Weather icon Rain / Wet Weather
  • Weather icon Clear Skies
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  • Weather icon Mild Temperatures

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Discover more about Fossil Tree

A Geological Treasure Frozen in Time

MacCulloch's Fossil Tree stands as a 12-meter-tall and 1.5-meter-wide imprint of a conifer tree fossilized within the basalt cliffs of the Ardmeanach Peninsula. Formed approximately 50 to 60 million years ago during intense volcanic activity triggered by the opening of the Atlantic Ocean, molten lava engulfed a forest of conifer trees. As the lava cooled and solidified, it preserved the carbonized remains and left a unique impression on the cliff face. This rare fossilization within igneous rock is an extraordinary geological phenomenon, with the tree’s fossilized tissues still partially visible near the base.

The Dramatic Landscape of Burg and Ardmeanach

The fossil resides in a wild and rugged coastal environment designated as a National Scenic Area and Special Area of Conservation. The peninsula features steep cliffs, grassy uplands, and rocky shorelines shaped by volcanic eruptions and relentless Atlantic waves. Visitors can also spot diverse wildlife such as golden eagles, feral goats, red deer, and rare moth species. The area’s natural beauty is complemented by historical remnants including Bronze Age burial cairns and Iron Age settlement ruins, reflecting a deep human connection to this remote wilderness.

Access and the Challenging Coastal Walk

Reaching the Fossil Tree involves a demanding 14-mile linear hike starting from the Tiroran car park. The trail traverses forest tracks, narrow cliff paths, and rocky beaches. The final approach requires descending a steep iron ladder attached to the cliff face before crossing a tidal rocky shore. Due to the exposed terrain and the ladder descent, this walk is not suitable for those with a fear of heights, vertigo, or dogs. Tide times are crucial; the fossil is only accessible at low tide when the beach is exposed, so careful planning is essential.

Historical Significance and Discovery

The fossil was discovered in 1819 by John MacCulloch, Scotland’s pioneering geological cartographer, during his work on the first geological map of Scotland. His discovery remains a landmark in British geology, illustrating the island’s volcanic past and the rare preservation of organic material within lava flows. The fossil tree has since become a symbol of Mull’s unique geological heritage and a highlight for visitors interested in natural history.

Preservation and Visitor Experience

Visitors today can marvel at the fossil’s striking basaltic columns formed by the cooling lava around the tree trunk, creating curved shapes resembling branches. While original charcoal remains have diminished due to weathering and visitor impact, the site remains a powerful visual testament to ancient natural processes. The surrounding landscape offers spectacular ocean views toward South Mull and nearby islands like Staffa and Lunga, enriching the visitor experience with both geological wonder and scenic beauty.

Conservation and Natural Environment

The Fossil Tree is located within a protected environment managed by the National Trust for Scotland since 1932. This 617-hectare property is valued for its rich plant life and wildlife habitat. Visitors are encouraged to respect the delicate natural setting by adhering to Leave-No-Trace principles, ensuring the preservation of this extraordinary geological and ecological site for future generations.

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