By Dean Murray

Scientists have discovered what may be the world's largest spider web .

Researchers found the colossal web hosting a megacity of around 111,000 spiders in Sulfur Cave, a site located on the border between Albania and Greece.

Stretching over 106 square meters, the arachnids comprise two species: the domestic house spider (Tegenaria domestica) and the sheet weaver spider (Prinerigone vagans).​

The discovery, described in the journal Subterranean Biology , details how the spiders live in near-total darkness. It marks the first recorded case of colonial living for both species, each typically renowned for a solitary lifestyle.

Genetic studies show that these cave-dwelling spiders have adapted uniquely to their harsh, sulphur-rich environment, distinguishing them fro

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