Kostogan-I burial ground is located 9,5 km north-east of Lesnovka Village, 6 km south-west of Turpan Village in Panfilov District of Almaty Oblast, 300 m north-west of the farm. Survey of the site was held by Almaty reconnaissance expedition of A.Margulan Institute of Archaeology in 2006. Burial ground occupies the northern part of the valley between Burhan and Karaozek gorges, in the foothills of the southern slopes of Zhongar Alatau Ridge.
Necropolis is situated on the piedmont plain of the right bank of the Kostogan stream. Burial ground consists of 34 barrows and some tens of the Bronze Age fences. Burial complex emerged in the same topographic environment as the Bronze Age settlement, situated 500 m west of necropolis.
The Bronze Age fences are accumulated in the northern and eastern parts of the burial ground. The fences are made of large stones and slabs, installed vertically and put in 2 - 3 layers, oriented in cardinal points. Parameters of the fences vary from 3x3 to 4x4 m, up to 0,2 m high. Burial chambers in the form of rectangular stone boxes and cists oriented from west to east are fixed within fences. Burial chambers are of 1x0,6 to 2x1,2 m in seize. The Bronze Age necropolis occupies an area of about 40 000 sq.m. Burial complexes of this type are traced in burial constructions of Shu-Ile Mountains in the southern part of the Ile valley which refer this monument to the late Andronovo period (XVIII-XII cc.BC) up to the transitional from the Bronze Age to the Early Iron Age period.
The barrows are regularly spread all over the territory of the site and stretched to a line focused with an axis from north-east to south-west. Embankments are made of earth and stone, gentle, fallen, spherically shaped, with a stone ring encircling the basis, grass-covered. Diameters vary from 4 to 15 m, height –from 0,2 to 1 m. The barrows are spread at distance of 10 to 78 m. All large barrows are plundered, with extortionate funnels.
Construction features, shape of embankments and burial structures attribute the burial ground to the Sakae period of the Early Iron Age, which corresponds to the ceramic material uncovered in the neighboring settlement.