Oaky Grove
This short multi should take you around 10-15 minutes to do. The cache, a small camo-taped, screw-capped plastic pot, is hidden in a shady grove of mixed mature trees (including several oaks) in the eastern part of the delightful ancient Heber's Ghyll Woods which sit on the steep slopes of Rombalds Moor above the western end of Ilkley.
Several paths wind up through the woodland gaining almost 100m altitude to give access to the moor just east of Panorama Reservoir - a good way to join the cache-rich trail heading east along Addingham Edge.
When Ilkley became a popular late Victoria resort, many of the place names were tidied up and made more 'romantic'. The spelling 'Ghyll' with its ancient British connotations was substituted for 'Gill'. The stream that ran down from the Moor was renamed Heber's Ghyll, instead of its original (and unromantic) Black Beck. At the same time, the village of Wheatley was renamed Ben Rhydding (another faux ancient British spelling). This respelling was done at a time when William Morris and the Arts and Crafts movement had made all things ancient British fashionable. Heber's Ghyll was named after Bishop Reginald Heber, who had no connection with Ilkley but was a famous hymn writer who died in India in 1826.
To reach the cache location: park in the lay-by at N 53 55.297 W 1 50.937 on Heber's Ghyll Drive.
Step 1: after securing your vehicle, walk the short distance along the road to the bridge over the beck @ N 53 55.298 W 1 50.955 where you will note that there are A rectangular (presumably simply decorative) holes in the central section wall of the bridge.
Step 2: walk back to the new memorial bench @ N 53 55.299 W 1 50.936 on which is a small plate commemorating a talented local artist and nature lover. The number of letters in his surname = B
Step 3: now head steeply up the initially stepped trail to N 53 55.249 W 1 50.845 where you will find another bench at the side of the path which was placed in memory of Ursula Dodson who passed away in 199C
Step 4: a little further up the trail @ N 53 55.245 W 1 50.823 you will come to a junction with a small - now rather overgrown - trail heading up into the woodland. Looking up here to the right you will see an electricity pole with a metal identification plate on it. The 1st and 3rd digits of the number on this plate are the same and = D
From here head up the little trail into the woods looking out for a gap in the wall on your left. Head through this and on to the cache location on the eastern edge of a large bracken/bramble 'clearing' in the woods.
The cache is hidden at:
N 53 55.(B-C)(D-2)(A-3) W 1 50.(Cx2)(B-D)(D-C)
The oak is one of around 600 species of tree or shrub in the genus Quercus of the beech family. It is native to the Northern Hemisphere, and includes deciduous and evergreen species extending from cool temperate to tropical latitudes in the Americas, Asia, Europe, and North Africa.
North America has the largest number of species - around 90 in the US and 160 in Mexico (109 of which are endemic. The 2nd greatest oak diversity is China, with approx 100 species.
Oak wood has a density of about 0.75 g/cm3 creating great strength and hardness. It is very resistant to insect and fungal attack because of its high tannin content. It also has very appealing grain markings, particularly when quartersawn.
Uses of oak
The oak is an extremely useful tree! Oak planking was common on high-status Viking longships in the 9th 
and 10th centuries. The wood was hewn from green logs, by axe and wedge, to produce radial planks, similar to quarter-sawn timber.
Wide, quarter-sawn boards of oak have been prized since the Middle Ages for use in interior panelling of prestigious buildings such as the debating chamber of the House of Commons and in the construction of fine furniture.
Oak wood was used in Europe for the construction of ships, especially naval men of war, until the 19th century, and was the main timber used to construct European timber-framed buildings. Today it is still commonly used for furniture and flooring, timber frame buildings, and as a veneer.
Barrels in which wines, sherry, and spirits such as brandy, Irish whiskey, Scotch whiskey and Bourbon whiskey are aged are made from European and American oak, with single barrel whiskey fetching a premium.
The use of oak in wine can add many different dimensions to wine based on the type and style of the oak. Oak barrels, which may be charred before use, add to the colour, taste, and aroma of the contents, imparting a desirable oaky vanillin flavour.
Oak wood chips are used for smoking fish, meat, cheeses, and other foods.
In the hill states of India, besides fuelwood and timber, people use oak wood for making agricultural implements and the leaves are used as fodder during lean period and bedding for livestock.
The bark of the cork oak is used to produce wine bottle stoppers (corks). This species grows in the Mediterranean region, with Portugal, Spain, Algeria, and Morocco producing most of the world's supply.
The bark of the white oak is dried and used in medical preparations. Oak bark is also rich in tannin and is used for tanning leather. Acorns are used to make flour or roasted for acorn coffee.
Oak trees are also very popular as geocache locations, as they provide numerous hiding places for caches within the many holes and crevices usually found (especially) in older specimens.
See here for comprehensive information on the tree including a fascinating section on its cultural significance - as a national, regional or state symbol, and for political and religious use.
Famous oak trees
The >1,000 year old Bowthorpe Oak (see photo above) in Lincolnshire is believed to be the oldest oak in England with a girth (circumference) of 12.3m.
'Majesty' (see photo) a pedunculate oak in Fredville Park- a private estate, near Dover, Kent, is the thickest 
(girthiest) tree in the UK with a trunk 13' in diameter (at chest height) and a girth of 40'. It has this girth up to about 20' high but is completely hollow.
A sessile oak at Croft Castle, a National Trust property in Herefordshire is the biggest tree in Britain (by volume of timber) At 115' tall with 9' diameter trunk at its base, and a volume of approx 3,800 cubic feet, it is Britain’s biggest living thing.
A 200-year-old oak in the grounds of the National Trust Stourhead estate in Wiltshire is the tallest oak in the UK at 40.4m (132.5').