Dating prehistoric remains
The collection of bones, which include samples from two males and two females, was excavated from the site of Mladec more than a century ago.
Scientists have until now failed to date the fossils accurately.
A mostly circular walk from the Castle-an-dinas Iron Age hillfort with 360 degree views across Cornwall, then into the valley to the River Menalhyl, followed by wooded paths lined with primroses, bluebells and wild garlic, and lanes with vibrant wildflowers.
A circular walk from St Just to Cape Cornwall and the Cot Valley where an ancient beach has been eroded from the cliffs at Porth Nanven releasing granite boulders resembling Dinosaur eggs.
A circular walk around Stannon Moor near St Breward with panoramic views of Bodmin Moor, passing stone circles, burial chambers and other prehistoric monuments to a massive granite boulder balanced on Louden Hill which gently rocks if you sit on it.
A circular walk from the Golitha Falls National Nature Reserve to King Doniert's Stone, a memorial to the last King of Cornwall, and the prehistoric tomb of Trethevy Quoit, returning via St Cleer where the holy well is reputed to cure madness.
The work is published in the journal Proceedings of the National Academy of Sciences in the United States.
A circular walk in one of the less well-known areas of Bodmin Moor to the summit of Fox Tor and through the prehistoric remains which date from the Bronze Age and Neolithic times, including the Nine Stones circle.
A circular walk over the northern tip of Bodmin Moor to the prehistoric burial chamber at the top of Buttern Hill and source of the River Fowey, returning via farm tracks and country lanes to the tributary streams of the River Inny.
A circular walk around the iconic landmarks at Minions, including The Hurlers stone circles, The Cheesewring and the engine houses of the South Phoenix Mine.
The route also includes the Rillaton Barrow and the Neolithic enclosure of Stowe's Pound.