Complex sentence: It is situated between "Sídujökull" and Skeiðarájökull, two of the southern arms of the big glacier Vatnajökull, and lies 15 km to the north of the infamous Skeiðará sander.
Split into simpler sentences: It is situated between "Sídujökull" and Skeiðarájökull, two of the southern arms of the big glacier Vatnajökull. At the same time, it s lying 15 km to the north of the infamous Skeiðará sander.