Cuillin range. Cracks and fissures in the rock provided pathways for later magma intrusions, leading to dykes of basalt which are commonly seen across Skye. The Red Cuillin also have volcanic origins, being formed from a later intrusion of acidic, granitic rock. This granite was more uniformly eroded by wind and water than the gabbro and basalt, causing the red hills to have smoother outlines. The Cuillin provide classic examples of glacial topography and were the subject of an early published account by James Forbes in 1846 (who had become a fellow of the Royal Society of Edinburgh aged only nineteen).
Pentland Hills Pentland Hills The Pentland Hills are a range of hills to the south-west of Edinburgh, Scotland. The range is around 20 miles (32 km) in length, and runs south west from Edinburgh towards Biggar and the upper Clydesdale. Some of the peaks include: The hills span a number of council regions: from the City of Edinburgh and Midlothian in the north, south-west through West Lothian to the Scottish Borders and South Lanarkshire. The Pentland Hills Regional Park was designated in 1986. It covers an area of 90 km² (35 sq mi) at the northern end of the hills. The park,