The Small Isles comprise the Inner Hebridean islands of Rum, Eigg, Canna
and Muck.
The landscapes, rocks and fossils of these beautiful, remote islands
tells of a drama involving erupting volcanoes, an ancient ecosystem that
included dinosaurs and an ancient desert landscape. The geological
history stretches back 3 billion years to the earliest events recorded
on Earth.
All four islands owe their origin to a group of three adjacent volcanoes
that were active around 60 million years ago. Rum is the eroded remains
of the magma chamber of one of these volcanoes. Eigg and Muck are part
of the lava field that extends north from the Mull volcano and Canna
lies towards the southern extent of the lavas that flowed from the Skye
volcano.
The final event that left a mark on these islands was the Ice Age that
started around 2.4 million years ago. Its effect on the landscape was
profound. The thick cover of erosive ice shaped the contours of the land
into the hills and glens that we are familiar with today.