On Day 5 (August 28, 1999), the reconnaissance team covered the vicinity of Golcuk.

In a glue factory to the east of Golcuk, there was relative displacement and cracking between the foundation of the tank and the concrete slabs (N40^o42.755’, E29^o53.139’, 8/28/99, 12:07:23).

In Golcuk, the crane and steel frame of a construction site were standing apparently undamaged while many reinforced concrete buildings in the foreground had been destroyed by the earthquake (N40^o42.385’, E29^o52.456’, 8/28/99, 12:20:10).

The town of Golcuk was severely impacted by the earthquake. Many lost their lives due to the collapse of apartment buildings (N40^o42.374’, E29^o52.259’, 8/28/99, 12:22:44).

At the eastern entrance of Golcuk, a building collapsed and crushed a van (N40^o42.374’, E29^o52.259’, 8/28/99, 12:22:44).

In Golcuk, the Ford plant was under construction. There was obvious evidence of ground rupture in the site. One side of the building subsided differentially, and the wall buckled (N40^o42.947’, E29^o50.89’, 8/28/99, 13:21:46).

In the reinforced concrete slab inside the Ford plant in Golcuk, there were cracks caused by differential ground displacements (N40^o42.947’, E29^o50.89’, 8/28/99, 13:21:46).

In the unpaved ground of the Ford plant in Golcuk, there were ground cracks (N40^o42.947’, E29^o50.89’, 8/28/99, 13:21:46).

In the Ford plant in Golcuk, the U-shaped utilities corridor was subjected to tension and failed due to ground displacement (N40^o42.818’, E29^o51.098’, 8/28/99, 13:49:32).

In the Ford plant of Golcuk, the utility corridor was broken and separated due to tensile strain (N40^o42.818’, E29^o51.098’, 8/28/99, 13:49:32).

The ground spread laterally close to the ground rupture that went along the fence of the Ford plant in Golcuk (N40^o42.818’, E29^o51.098’, 8/28/99, 13:49:32).

A ground rupture ran parallel to the fence of the Ford plant in Golcuk. In some areas the vertical offset exceeded two meters (N40^o43.165’, E29^o50.596’, 8/28/99, 15:42:14).

Located 80 m above the ground in the painting building of the Ford plant of Golcuk, the 5-ton transformer jumped out of its housing, and scraped the floor due to earthquake acceleration (N40^o43.165’, E29^o50.596’, 8/28/99, 15:42:14).

In the open space between the buildings of the Ford plant of Golcuk, a large sand boil erupted and littered the ground surface with silty sand (N40^o43.165’, E29^o50.596’, 8/28/99, 15:42:14).

In Golcuk, the ground rupture passed beneath the corner of a house, and the corner of the house detached from the house (N40^o43.178’, E29^o50.555’, 8/28/99, 15:45:11).

In Golcuk, the ground rupture passed very close to the house, causing almost no visible damage to the house. Some plants were still hanging to the soil close to the house (N40^o43.178’, E29^o50.555’, 8/28/99, 15:45:11).

In Golcuk, the ground rupture crossed the road. The vertical offset was about 2 m (N40^o43.132’, E29^o50.52’, 8/28/99, 15:51:45).

In Golcuk, the ground rupture passed close to a wall, intersected it, and sheared it. Most of the wall remained intact (N40^o43.245’, E29^o50.477’, 8/28/99, 16:01:42).

In Golcuk, the ground rupture passed in front of three houses without apparently damaging them (N40^o43.245’, E29^o50.477’, 8/28/99, 16:01:42).

Golcuk was severely struck by the earthquake. The two buildings on each side of this apartment building completely collapsed (N40^o43.298’, E29^o49.135’, 8/28/99, 16:32:43).

To the west of Golcuk, a piece of land disappeared into the Marmara Sea (N40^o43.328’, E29^o46.994’, 8/28/99, 17:26:22).

To the west of Golcuk, the waterfront disappeared into the Marmara Sea (N40^o43.326’, E29^o46.823’, 8/28/99, 17:41:54).

To the west of Golcuk, the road and waterfront disappeared into the sea, and took with it part of the apartment building (N40^o43.326’, E29^o46.823’, 8/28/99, 17:41:54).

To the west of Golcuk, the second floor of two apartment buildings collapsed and their upper floors moved laterally (N40^o43.315’, E29^o46.832’, 8/28/99, 17:53:39).

To the west of Golcuk, a piece of land slid into the sea. There were ground cracks parallel to the new shoreline (N40^o43.074’, E29^o46.083’, 8/28/99, 16:20:48).

To the west of Golcuk, the waterfront slid into the sea, and exposed two tanks of a gas station (N40^o43.074’, E29^o46.083’, 8/28/99, 16:20:48).

To the west of Golcuk, the waterfront slid into the sea. The slide must have occurred gently as the red table and chair were still standing on the inclined concrete floor (N40^o43.074’, E29^o46.083’, 8/28/99, 16:20:48).