Those who could have mobilized a large-scale army, the local nobles of Trøndelag (of which Einar Thambarskelfir was a prime example) were notable largely by their absence on either side. Also, the battlefield of a hotly-contested battle between nearly 20,000 men should have produced rich archeological findings to that effect; at Stiklestad however, these are sparse, though this is common in Norway. The rocky soil is not as well-suited to battlefield archaeology as continental or English soil. It makes georadar readings all but unusable, and the location of the battle site highly uncertain. On Stiklestad, the soil is deep soil with some clay, and georadar was used in 2008, showing traces of large buildings, but not much to indicate a battlefield. As is the case with most battles mentioned in the sagas, the sizes of the battling armies are probably impossible to determine.