diff --git a/source/hazard/hlog.cpp b/source/hazard/hlog.cpp
new file mode 100644
index 000000000..e8103ec34
--- /dev/null
+++ b/source/hazard/hlog.cpp
@@ -0,0 +1,94 @@
+/*=========================================================================
+
+	hlog.cpp
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __HAZARD_HLOG_H__
+#include "hazard\hlog.h"
+#endif
+
+#ifndef	__UTILS_HEADER__
+#include	"utils\utils.h"
+#endif
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcLogHazard::init()
+{
+	CNpcHazard::init();
+
+	m_extension = 0;
+	m_velocity = 40;
+	m_height = 50;
+
+	m_respawnRate = 4;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcLogHazard::setWaypoints( sThingHazard *ThisHazard )
+{
+	int pointNum;
+
+	u16	*PntList=(u16*)MakePtr(ThisHazard,sizeof(sThingHazard));
+
+	u16 newXPos, newYPos;
+
+	m_npcPath.setWaypointCount( ThisHazard->PointCount - 1 );
+
+	newXPos = (u16) *PntList;
+	setWaypointPtr( PntList );
+	PntList++;
+	newYPos = (u16) *PntList;
+	PntList++;
+
+	DVECTOR startPos;
+	startPos.vx = ( newXPos << 4 ) + 8;
+	startPos.vy = ( newYPos << 4 ) + 16;
+
+	s32 minY, maxY;
+
+	m_npcPath.getPathYExtents( &minY, &maxY );
+	m_height = maxY - minY;
+
+	Pos = startPos;
+	Pos.vy = minY;
+	m_base = Pos;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void CNpcLogHazard::processMovement( int _frames )
+{
+	if ( m_extendDir == EXTEND_DOWN )
+	{
+		m_extension += _frames;
+
+		if ( m_extension > m_height )
+		{
+			m_extension = m_height;
+			m_extendDir = EXTEND_UP;
+		}
+	}
+	else
+	{
+		m_extension -= _frames;
+
+		if ( m_extension < 0 )
+		{
+			m_extension = 0;
+			m_extendDir = EXTEND_DOWN;
+		}
+	}
+
+	Pos.vy = m_base.vy + m_extension;
+}
diff --git a/source/hazard/hlog.h b/source/hazard/hlog.h
new file mode 100644
index 000000000..a2debb299
--- /dev/null
+++ b/source/hazard/hlog.h
@@ -0,0 +1,33 @@
+/*=========================================================================
+
+	hlog.h
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2001 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __HAZARD_HLOG_H__
+#define __HAZARD_HLOG_H__
+
+#ifndef __HAZARD_HAZARD_H__
+#include "hazard\hazard.h"
+#endif
+
+class CNpcLogHazard : public CNpcHazard
+{
+public:
+	void				init();
+	virtual void		setWaypoints( sThingHazard *ThisHazard );
+protected:
+	void				processMovement( int _frames );
+
+	s32					m_velocity;
+	s32					m_height;
+};
+
+#endif
\ No newline at end of file