diff --git a/src/crashlog.cpp b/src/crashlog.cpp
index 4813bd044b..3681aa23c6 100644
--- a/src/crashlog.cpp
+++ b/src/crashlog.cpp
@@ -216,6 +216,8 @@ char *CrashLog::LogConfiguration(char *buffer, const char *last) const
 			FontCache::Get(FS_MONO)->GetFontName()
 	);
 
+	buffer += seprintf(buffer, last, "Map size: 0x%X (%u x %u)%s\n\n", MapSize(), MapSizeX(), MapSizeY(), (!_m || !_me) ? ", NO MAP ALLOCATED" : "");
+
 	buffer += seprintf(buffer, last, "AI Configuration (local: %i) (current: %i):\n", (int)_local_company, (int)_current_company);
 	const Company *c;
 	FOR_ALL_COMPANIES(c) {
diff --git a/src/map.cpp b/src/map.cpp
index 302e1b95e2..f6a8280bdd 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -402,3 +402,43 @@ uint GetClosestWaterDistance(TileIndex tile, bool water)
 
 	return max_dist;
 }
+
+char *DumpTileInfo(char *b, const char *last, TileIndex tile)
+{
+	static const char *tile_type_names[16] = {
+		"MP_CLEAR",
+		"MP_RAILWAY",
+		"MP_ROAD",
+		"MP_HOUSE",
+		"MP_TREES",
+		"MP_STATION",
+		"MP_WATER",
+		"MP_VOID",
+		"MP_INDUSTRY",
+		"MP_TUNNELBRIDGE",
+		"MP_OBJECT",
+		"INVALID_B",
+		"INVALID_C",
+		"INVALID_D",
+		"INVALID_E",
+		"INVALID_F",
+	};
+
+	if (tile == INVALID_TILE) {
+		b += seprintf(b, last, "tile: %X (INVALID_TILE)", tile);
+	} else {
+		b += seprintf(b, last, "tile: %X (%u x %u)", tile, TileX(tile), TileY(tile));
+	}
+	if (!_m || !_me) {
+		b += seprintf(b, last, ", NO MAP ALLOCATED");
+	} else {
+		if (tile >= MapSize()) {
+			b += seprintf(b, last, ", TILE OUTSIDE MAP");
+		} else {
+			b += seprintf(b, last, ", type: %02X (%s), height: %02X, data: %02X %04X %02X %02X %02X %02X %02X",
+					_m[tile].type, tile_type_names[GB(_m[tile].type, 4, 4)], _m[tile].height,
+					_m[tile].m1, _m[tile].m2, _m[tile].m3, _m[tile].m4, _m[tile].m5, _me[tile].m6, _me[tile].m7);
+		}
+	}
+	return b;
+}
diff --git a/src/map_func.h b/src/map_func.h
index 7d17d6bed6..65ad725dff 100644
--- a/src/map_func.h
+++ b/src/map_func.h
@@ -439,4 +439,6 @@ static inline TileIndex RandomTileSeed(uint32 r)
 
 uint GetClosestWaterDistance(TileIndex tile, bool water);
 
+char *DumpTileInfo(char *b, const char *last, TileIndex tile);
+
 #endif /* MAP_FUNC_H */
diff --git a/src/openttd.cpp b/src/openttd.cpp
index 3c26a2fead..656e70f4cd 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -133,7 +133,7 @@ void CDECL error(const char *s, ...)
 	abort();
 }
 
-void CDECL assert_msg_error(int line, const char *file, const char *expr, const char *str, ...)
+void CDECL assert_msg_error(int line, const char *file, const char *expr, const char *extra, const char *str, ...)
 {
 	va_list va;
 	char buf[2048];
@@ -141,6 +141,10 @@ void CDECL assert_msg_error(int line, const char *file, const char *expr, const
 	char *b = buf;
 	b += seprintf(b, lastof(buf), "Assertion failed at line %i of %s: %s\n\t", line, file, expr);
 
+	if (extra != nullptr) {
+		b += seprintf(b, lastof(buf), "%s\n\t", extra);
+	}
+
 	va_start(va, str);
 	vseprintf(b, lastof(buf), str, va);
 	va_end(va);
@@ -152,6 +156,12 @@ void CDECL assert_msg_error(int line, const char *file, const char *expr, const
 	abort();
 }
 
+const char *assert_tile_info(uint32 tile) {
+	static char buffer[128];
+	DumpTileInfo(buffer, lastof(buffer), tile);
+	return buffer;
+}
+
 /**
  * Shows some information on the console/a popup box depending on the OS.
  * @param str the text to show.
diff --git a/src/scope_info.cpp b/src/scope_info.cpp
index c0327ce429..5bbc7aa85e 100644
--- a/src/scope_info.cpp
+++ b/src/scope_info.cpp
@@ -17,6 +17,7 @@
 #include "vehicle_base.h"
 #include "station_base.h"
 #include "waypoint_base.h"
+#include "map_func.h"
 #include "table/strings.h"
 
 #include "safeguards.h"
@@ -116,3 +117,8 @@ const char *scope_dumper::StationInfo(const BaseStation *st)
 	}
 	return this->buffer;
 }
+
+const char *scope_dumper::TileInfo(TileIndex tile)
+{
+	return DumpTileInfo(this->buffer, lastof(this->buffer), tile);
+}
diff --git a/src/scope_info.h b/src/scope_info.h
index a908804c74..d5d7c402d0 100644
--- a/src/scope_info.h
+++ b/src/scope_info.h
@@ -12,6 +12,8 @@
 #ifndef SCOPE_INFO_H
 #define SCOPE_INFO_H
 
+#include "tile_type.h"
+
 #include <functional>
 #include <vector>
 
@@ -70,6 +72,7 @@ struct scope_dumper {
 	const char *CompanyInfo(int company_id);
 	const char *VehicleInfo(const Vehicle *v);
 	const char *StationInfo(const BaseStation *st);
+	const char *TileInfo(TileIndex tile);
 
 private:
 	char buffer[256];
diff --git a/src/stdafx.h b/src/stdafx.h
index a017cb39cd..1e6e849c28 100644
--- a/src/stdafx.h
+++ b/src/stdafx.h
@@ -438,7 +438,8 @@ typedef uint64 unaligned_uint64;
 
 void NORETURN CDECL usererror(const char *str, ...) WARN_FORMAT(1, 2);
 void NORETURN CDECL error(const char *str, ...) WARN_FORMAT(1, 2);
-void NORETURN CDECL assert_msg_error(int line, const char *file, const char *expr, const char *str, ...) WARN_FORMAT(4, 5);
+void NORETURN CDECL assert_msg_error(int line, const char *file, const char *expr, const char *extra, const char *str, ...) WARN_FORMAT(5, 6);
+const char *assert_tile_info(uint32 tile);
 #define NOT_REACHED() error("NOT_REACHED triggered at line %i of %s", __LINE__, __FILE__)
 
 /* For non-debug builds with assertions enabled use the special assertion handler:
@@ -453,9 +454,13 @@ void NORETURN CDECL assert_msg_error(int line, const char *file, const char *exp
 /* Asserts are enabled if NDEBUG isn't defined, or if we are using MSVC and WITH_ASSERT is defined. */
 #if !defined(NDEBUG) || (defined(_MSC_VER) && defined(WITH_ASSERT))
 	#define OTTD_ASSERT
-	#define assert_msg(expression, ...) if (unlikely(!(expression))) assert_msg_error(__LINE__, __FILE__, #expression, __VA_ARGS__);
+	#define assert_msg(expression, ...) if (unlikely(!(expression))) assert_msg_error(__LINE__, __FILE__, #expression, nullptr, __VA_ARGS__);
+	#define assert_msg_tile(expression, tile, ...) if (unlikely(!(expression))) assert_msg_error(__LINE__, __FILE__, #expression, assert_tile_info(tile), __VA_ARGS__);
+	#define assert_tile(expression, tile) if (unlikely(!(expression))) error("Assertion failed at line %i of %s: %s\n\t%s", __LINE__, __FILE__, #expression, assert_tile_info(tile));
 #else
 	#define assert_msg(expression, ...)
+	#define assert_msg_tile(expression, tile, ...)
+	#define assert_tile(expression, tile)
 #endif
 
 #if defined(MORPHOS) || defined(__NDS__) || defined(__DJGPP__)