Ḥarrat Rahāṭ[1] (
Arabic: حَرَّة رَهَاط) is a volcanic
lava field in the
Hejazi region of
Saudi Arabia. In 1256 CE, a 0.5 km3 (0.12 cu mi)
lava flow erupted from six aligned
scoria cones, and traveled 23 km (14 mi) to within 4 km (2.5 mi) of the
Islamic holy city of
Medina; this was its last
eruption. There were earlier eruptions, such as in 641 CE, which made finger-like flows to the east of the 1256 CE flow.[2] It is the biggest lava field in Saudi Arabia.[3] Nearby is
Al Wahbah crater.
There has been recent increase in seismic activity since 2009.[4]
Note: Mountains are sorted in alphabetical order, unless where it concerns ranges. The highest confirmed mountains in each country are indicated with 'HP', and those with the highest peak are indicated with 'HP', bearing in mind that in the UAE, the highest mountain and the mountain with the highest peak are different.
Outcrops are indicated with 'OC', and
outliers with 'OL', and
anticlines with 'AC'.
Volcanoes are indicated with 'V',
volcanic craters with 'VC',
lava fields with 'LF', and
volcanic fields with 'VF'.