Sheffield, England, United Kingdom
The Sheaf boulder opened in December 2012 in Heeley Millennium Park, a short walk from the original Heeley boulder, after a consultation with local climbers about what they wanted. The result is quite different from its neighbour: two cuboid blocks set at an angle, giving an overhanging face of small to mid-sized edges, some incut and some sloping, slabs on the other side, a crack between the blocks and two ends.
It climbs more like real rock than the original and is seriously technical: the slabby face is still tough, the overhang is fingery and pumpy, and even the downclimb takes care. The wiki splits it into six sections for recording problems.
It is one of more than a dozen artificial climbing boulders in Sheffield's parks documented by the community Sheffield Boulders wiki. They are free for anyone to use, with no booking, staff or opening times beyond the park's own, and are meant for fun and training rather than graded problems: the wiki deliberately gives no grades.
As we last found them. Prices change, so check the wall's website before you go.
“Extremely difficult. The other boulder is better.”
“The boulder itself is not bad, good variety in problems.”
Ratings as each site showed them in October 2026.
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