Banjo-Kazooie Wiki

The "Temple Test Level" is a test area created during development of Banjo-Kazooie, and was commonly shown in pre-release promotional material. The level is sometimes mistaken for the "Giant's Lair", an early concept of Gruntilda's Lair; and Mount Fire Eyes, a cut world that was eventually redeveloped into the lava side of Hailfire Peaks in Banjo-Tooie.

The test level consists of a towering temple structure with multiple doors, surrounded by stone ramps and sandy terrain. The area is fully enclosed with wooden plank walls. The purpose of the level was to test 3D level design, and to aid in developing the moveset for Banjo and Kazooie. Clear footage of the test level can be seen in the video "Rare Revealed: A Rare Look at Dream" on Rare's official YouTube account.